312122211338 has 16 divisors (see below), whose sum is σ = 535074266880. Its totient is φ = 133764757296.

The previous prime is 312122211337. The next prime is 312122211389. The reversal of 312122211338 is 833112221213.

It is a self number, because there is not a number n which added to its sum of digits gives 312122211338.

It is not an unprimeable number, because it can be changed into a prime (312122211337) 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, 1362020 + ... + 1574592.

It is an arithmetic number, because the mean of its divisors is an integer number (33442141680).

Almost surely, 2^312122211338 is an apocalyptic number.

312122211338 is a deficient number, since it is larger than the sum of its proper divisors (222952055542).

312122211338 is a wasteful number, since it uses less digits than its factorization.

312122211338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317461.

The product of its digits is 3456, while the sum is 29.

The spelling of 312122211338 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred eleven thousand, three hundred thirty-eight".