12531279122 has 16 divisors (see below), whose sum is σ = 19966632192. Its totient is φ = 5878105920.

The previous prime is 12531279113. The next prime is 12531279143. The reversal of 12531279122 is 22197213521.

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, 581978 + ... + 603125.

It is an arithmetic number, because the mean of its divisors is an integer number (1247914512).

Almost surely, 2^12531279122 is an apocalyptic number.

12531279122 is a deficient number, since it is larger than the sum of its proper divisors (7435353070).

12531279122 is a wasteful number, since it uses less digits than its factorization.

12531279122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185433.

The product of its digits is 15120, while the sum is 35.

The spelling of 12531279122 in words is "twelve billion, five hundred thirty-one million, two hundred seventy-nine thousand, one hundred twenty-two".