102120110111212 has 12 divisors (see below), whose sum is σ = 186480201072816. Its totient is φ = 48840052661840.

The previous prime is 102120110111209. The next prime is 102120110111267. The reversal of 102120110111212 is 212111011021201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555000598339 + ... + 555000598522.

It is an arithmetic number, because the mean of its divisors is an integer number (15540016756068).

Almost surely, 2^{102120110111212} is an apocalyptic number.

It is an amenable number.

102120110111212 is a deficient number, since it is larger than the sum of its proper divisors (84360090961604).

102120110111212 is a wasteful number, since it uses less digits than its factorization.

102120110111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110001196888 (or 1110001196886 counting only the distinct ones).

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

Adding to 102120110111212 its reverse (212111011021201), we get a palindrome (314231121132413).

The spelling of 102120110111212 in words is "one hundred two trillion, one hundred twenty billion, one hundred ten million, one hundred eleven thousand, two hundred twelve".