121021022112112 has 20 divisors (see below), whose sum is σ = 234599533159720. Its totient is φ = 60479207103168.

The previous prime is 121021022112073. The next prime is 121021022112173. The reversal of 121021022112112 is 211211220120121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121021022112112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956465162 + ... + 1956527017.

It is an arithmetic number, because the mean of its divisors is an integer number (11729976657986).

Almost surely, 2^{121021022112112} is an apocalyptic number.

It is an amenable number.

121021022112112 is a deficient number, since it is larger than the sum of its proper divisors (113578511047608).

121021022112112 is a wasteful number, since it uses less digits than its factorization.

121021022112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912994120 (or 3912994114 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121021022112112 its reverse (211211220120121), we get a palindrome (332232242232233).

The spelling of 121021022112112 in words is "one hundred twenty-one trillion, twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred twelve".