102120211012 has 24 divisors (see below), whose sum is σ = 199181838240. Its totient is φ = 45527276160.

The previous prime is 102120210991. The next prime is 102120211013. The reversal of 102120211012 is 210112021201.

It is a junction number, because it is equal to n+sod(n) for n = 102120210983 and 102120211001.

It is not an unprimeable number, because it can be changed into a prime (102120211013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39518914 + ... + 39521497.

It is an arithmetic number, because the mean of its divisors is an integer number (8299243260).

Almost surely, 2^102120211012 is an apocalyptic number.

It is an amenable number.

102120211012 is a deficient number, since it is larger than the sum of its proper divisors (97061627228).

102120211012 is a wasteful number, since it uses less digits than its factorization.

102120211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79040451 (or 79040449 counting only the distinct ones).

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

Adding to 102120211012 its reverse (210112021201), we get a palindrome (312232232213).

The spelling of 102120211012 in words is "one hundred two billion, one hundred twenty million, two hundred eleven thousand, twelve".