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122010112120 = 235131378232081
BaseRepresentation
bin111000110100001011…
…1101001000001111000
3102122221002112212221111
41301220113221001320
53444334042041440
6132014540050104
711546344561411
oct1615027510170
9378832485844
10122010112120
1147820589106
121b790b33934
13b675792320
145c962b4808
1532916b44ea
hex1c685e9078

122010112120 has 128 divisors (see below), whose sum is σ = 298302963840. Its totient is φ = 44645253120.

The previous prime is 122010112097. The next prime is 122010112129. The reversal of 122010112120 is 21211010221.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 122010112120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010112129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58629480 + ... + 58631560.

It is an arithmetic number, because the mean of its divisors is an integer number (2330491905).

Almost surely, 2122010112120 is an apocalyptic number.

122010112120 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 122010112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149151481920).

122010112120 is an abundant number, since it is smaller than the sum of its proper divisors (176292851720).

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

122010112120 is a wasteful number, since it uses less digits than its factorization.

122010112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122010112120 its reverse (21211010221), we get a palindrome (143221122341).

The spelling of 122010112120 in words is "one hundred twenty-two billion, ten million, one hundred twelve thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 137 260 274 520 548 685 823 1096 1370 1646 1781 2081 2740 3292 3562 4115 4162 5480 6584 7124 8230 8324 8905 10405 10699 14248 16460 16648 17810 20810 21398 27053 32920 35620 41620 42796 53495 54106 71240 83240 85592 106990 108212 112751 135265 213980 216424 225502 270530 285097 427960 451004 541060 563755 570194 902008 1082120 1127510 1140388 1425485 1465763 1712663 2255020 2280776 2850970 2931526 3425326 3706261 4510040 5701940 5863052 6850652 7328815 7412522 8563315 11403880 11726104 13701304 14657630 14825044 17126630 18531305 22264619 29315260 29650088 34253260 37062610 44529238 58630520 68506520 74125220 89058476 111323095 148250440 178116952 222646190 234634831 445292380 469269662 890584760 938539324 1173174155 1877078648 2346348310 3050252803 4692696620 6100505606 9385393240 12201011212 15251264015 24402022424 30502528030 61005056060 122010112120