102121200220012 has 24 divisors (see below), whose sum is σ = 179117121728160. Its totient is φ = 50944901199360.

The previous prime is 102121200219979. The next prime is 102121200220033. The reversal of 102121200220012 is 210022002121201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16382689 + ... + 21740167.

It is an arithmetic number, because the mean of its divisors is an integer number (7463213405340).

Almost surely, 2^{102121200220012} is an apocalyptic number.

It is an amenable number.

102121200220012 is a deficient number, since it is larger than the sum of its proper divisors (76995921508148).

102121200220012 is a wasteful number, since it uses less digits than its factorization.

102121200220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368281 (or 5368279 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102121200220012 its reverse (210022002121201), we get a palindrome (312143202341213).

The spelling of 102121200220012 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred million, two hundred twenty thousand, twelve".