22031312122 has 16 divisors (see below), whose sum is σ = 34207858440. Its totient is φ = 10629166912.

The previous prime is 22031312101. The next prime is 22031312179. The reversal of 22031312122 is 22121313022.

It can be written as a sum of positive squares in 4 ways, for example, as 15294021561 + 6737290561 = 123669^2 + 82081^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22031312122.

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, 24193 + ... + 211300.

Almost surely, 2^22031312122 is an apocalyptic number.

22031312122 is a deficient number, since it is larger than the sum of its proper divisors (12176546318).

22031312122 is a wasteful number, since it uses less digits than its factorization.

22031312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237137.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22031312122 its reverse (22121313022), we get a palindrome (44152625144).

It can be divided in two parts, 22031 and 312122, that added together give a triangular number (334153 = T₈₁₇).

The spelling of 22031312122 in words is "twenty-two billion, thirty-one million, three hundred twelve thousand, one hundred twenty-two".