102100111122120 has 128 divisors (see below), whose sum is σ = 314583490765440. Its totient is φ = 26490437959680.

The previous prime is 102100111122041. The next prime is 102100111122161. The reversal of 102100111122120 is 21221111001201.

It is a happy number.

It is a super-2 number, since 2×102100111122120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102100111122120.

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, 392015059 + ... + 392275421.

It is an arithmetic number, because the mean of its divisors is an integer number (2457683521605).

Almost surely, 2^{102100111122120} is an apocalyptic number.

102100111122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100111122120 is an abundant number, since it is smaller than the sum of its proper divisors (212483379643320).

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

102100111122120 is a wasteful number, since it uses less digits than its factorization.

102100111122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348735 (or 348731 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102100111122120 its reverse (21221111001201), we get a palindrome (123321222123321).

The spelling of 102100111122120 in words is "one hundred two trillion, one hundred billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty".