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111220122110020 = 22571119921823713
BaseRepresentation
bin11001010010011101110011…
…110111101100100001000100
3112120210112120112112222210121
4121102131303313230201010
5104034212302230010040
61032313452503031324
732266250210366440
oct3122356367544104
9476715515488717
10111220122110020
1132490209479380
1210583255a3b544
134a0a021649231
141d67122a59820
15ccd155c39c4a
hex652773dec844

111220122110020 has 144 divisors (see below), whose sum is σ = 292665304165248. Its totient is φ = 34491792107520.

The previous prime is 111220122110003. The next prime is 111220122110047. The reversal of 111220122110020 is 20011221022111.

It is a junction number, because it is equal to n+sod(n) for n = 111220122109976 and 111220122110003.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60073684 + ... + 61897396.

It is an arithmetic number, because the mean of its divisors is an integer number (2032397945592).

Almost surely, 2111220122110020 is an apocalyptic number.

111220122110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111220122110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146332652082624).

111220122110020 is an abundant number, since it is smaller than the sum of its proper divisors (181445182055228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111220122110020 is a wasteful number, since it uses less digits than its factorization.

111220122110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824138 (or 1823937 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111220122110020 its reverse (20011221022111), we get a palindrome (131231343132131).

The spelling of 111220122110020 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty-two million, one hundred ten thousand, twenty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 199 220 308 385 398 770 796 995 1393 1540 1990 2189 2786 3980 4378 5572 6965 8756 10945 13930 15323 21890 27860 30646 39601 43780 61292 76615 79202 153230 158404 198005 277207 306460 396010 435611 554414 792020 871222 1108828 1386035 1742444 1823713 2178055 2772070 3049277 3647426 4356110 5544140 6098554 7294852 8712220 9118565 12197108 12765991 15246385 18237130 20060843 25531982 30492770 36474260 40121686 51063964 60985540 63829955 80243372 100304215 127659910 140425901 200608430 255319820 280851802 362918887 401216860 561703604 702129505 725837774 1404259010 1451675548 1814594435 2540432209 2808518020 3629188870 3992107757 5080864418 7258377740 7984215514 10161728836 12702161045 15968431028 19960538785 25404322090 27944754299 39921077570 50808644180 55889508598 72220858513 79842155140 111779017196 139723771495 144441717026 279447542990 288883434052 361104292565 505546009591 558895085980 722208585130 794429443643 1011092019182 1444417170260 1588858887286 2022184038364 2527730047955 3177717774572 3972147218215 5055460095910 5561006105501 7944294436430 10110920191820 11122012211002 15888588872860 22244024422004 27805030527505 55610061055010 111220122110020