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102020122212 = 22389604715797
BaseRepresentation
bin101111100000011011…
…1111000011001100100
3100202022221212011221220
41133000313320121210
53132414122402322
6114511205140340
710241103505431
oct1370067703144
9322287764856
10102020122212
113a2a2776898
12179323ba6b0
13980b1b0a28
144d1b476b88
1529c177455c
hex17c0df8664

102020122212 has 48 divisors (see below), whose sum is σ = 240776686080. Its totient is φ = 33616920832.

The previous prime is 102020122153. The next prime is 102020122231. The reversal of 102020122212 is 212221020201.

It is a junction number, because it is equal to n+sod(n) for n = 102020122191 and 102020122200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6450298 + ... + 6466094.

It is an arithmetic number, because the mean of its divisors is an integer number (5016180960).

Almost surely, 2102020122212 is an apocalyptic number.

102020122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102020122212 is an abundant number, since it is smaller than the sum of its proper divisors (138756563868).

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

102020122212 is a wasteful number, since it uses less digits than its factorization.

102020122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21940 (or 21938 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102020122212 its reverse (212221020201), we get a palindrome (314241142413).

The spelling of 102020122212 in words is "one hundred two billion, twenty million, one hundred twenty-two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 89 178 267 356 534 1068 6047 12094 15797 18141 24188 31594 36282 47391 63188 72564 94782 189564 538183 1076366 1405933 1614549 2152732 2811866 3229098 4217799 5623732 6458196 8435598 16871196 95524459 191048918 286573377 382097836 573146754 1146293508 8501676851 17003353702 25505030553 34006707404 51010061106 102020122212