12565052122 has 32 divisors (see below), whose sum is σ = 23201685504. Its totient is φ = 4984729200.

The previous prime is 12565052113. The next prime is 12565052161. The reversal of 12565052122 is 22125056521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619404 + ... + 639367.

It is an arithmetic number, because the mean of its divisors is an integer number (725052672).

Almost surely, 2^12565052122 is an apocalyptic number.

12565052122 is a deficient number, since it is larger than the sum of its proper divisors (10636633382).

12565052122 is a wasteful number, since it uses less digits than its factorization.

12565052122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258834.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 12565052122 in words is "twelve billion, five hundred sixty-five million, fifty-two thousand, one hundred twenty-two".