121812052972 has 12 divisors (see below), whose sum is σ = 213231216520. Its totient is φ = 60888848256.

The previous prime is 121812052933. The next prime is 121812052987. The reversal of 121812052972 is 279250218121.

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, 4278597 + ... + 4306972.

Almost surely, 2^121812052972 is an apocalyptic number.

It is an amenable number.

121812052972 is a deficient number, since it is larger than the sum of its proper divisors (91419163548).

121812052972 is a wasteful number, since it uses less digits than its factorization.

121812052972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589120 (or 8589118 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 121812052972 in words is "one hundred twenty-one billion, eight hundred twelve million, fifty-two thousand, nine hundred seventy-two".