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122333331220 = 22519797975113
BaseRepresentation
bin111000111101110100…
…0100111111100010100
3102200202121202010012021
41301323220213330110
54001014313044340
6132111003502524
711560351105222
oct1617350477424
9380677663167
10122333331220
1147976a81431
121b861227a44
13b6c772c829
145cc71adb12
1532aec5ce4a
hex1c7ba27f14

122333331220 has 96 divisors (see below), whose sum is σ = 274241318400. Its totient is φ = 45704715264.

The previous prime is 122333331217. The next prime is 122333331347. The reversal of 122333331220 is 22133333221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23923384 + ... + 23928496.

It is an arithmetic number, because the mean of its divisors is an integer number (2856680400).

Almost surely, 2122333331220 is an apocalyptic number.

122333331220 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 122333331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137120659200).

122333331220 is an abundant number, since it is smaller than the sum of its proper divisors (151907987180).

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

122333331220 is a wasteful number, since it uses less digits than its factorization.

122333331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017 (or 6015 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 122333331220 its reverse (22133333221), we get a palindrome (144466664441).

The spelling of 122333331220 in words is "one hundred twenty-two billion, three hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 79 95 158 190 316 380 395 790 797 1501 1580 1594 3002 3188 3985 5113 6004 7505 7970 10226 15010 15143 15940 20452 25565 30020 30286 51130 60572 62963 75715 97147 102260 125926 151430 194294 251852 302860 314815 388588 403927 485735 629630 807854 971470 1196297 1259260 1615708 1942940 2019635 2392594 4039270 4075061 4785188 5981485 7674613 8078540 8150122 11962970 15349226 16300244 20375305 23925940 30698452 38373065 40750610 76746130 77426159 81501220 153492260 154852318 309704636 321929819 387130795 643859638 774261590 1287719276 1548523180 1609649095 3219298190 6116666561 6438596380 12233333122 24466666244 30583332805 61166665610 122333331220