12121525626 has 48 divisors (see below), whose sum is σ = 28228652640. Its totient is φ = 3459909600.

The previous prime is 12121525609. The next prime is 12121525649. The reversal of 12121525626 is 62652512121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289380 + ... + 328608.

It is an arithmetic number, because the mean of its divisors is an integer number (588096930).

Almost surely, 2^12121525626 is an apocalyptic number.

12121525626 is an abundant number, since it is smaller than the sum of its proper divisors (16107127014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121525626 is a wasteful number, since it uses less digits than its factorization.

12121525626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40299 (or 40292 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The spelling of 12121525626 in words is "twelve billion, one hundred twenty-one million, five hundred twenty-five thousand, six hundred twenty-six".