102102111021012 has 12 divisors (see below), whose sum is σ = 238238259049056. Its totient is φ = 34034037007000.

The previous prime is 102102111020989. The next prime is 102102111021023. The reversal of 102102111021012 is 210120111201201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×102102111021012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102102111020982 and 102102111021000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4254254625864 + ... + 4254254625887.

It is an arithmetic number, because the mean of its divisors is an integer number (19853188254088).

Almost surely, 2^{102102111021012} is an apocalyptic number.

102102111021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102102111021012 is an abundant number, since it is smaller than the sum of its proper divisors (136136148028044).

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

102102111021012 is a wasteful number, since it uses less digits than its factorization.

102102111021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8508509251758 (or 8508509251756 counting only the distinct ones).

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

Adding to 102102111021012 its reverse (210120111201201), we get a palindrome (312222222222213).

The spelling of 102102111021012 in words is "one hundred two trillion, one hundred two billion, one hundred eleven million, twenty-one thousand, twelve".