12555513212 has 54 divisors (see below), whose sum is σ = 24402284592. Its totient is φ = 5648324000.

The previous prime is 12555513211. The next prime is 12555513227. The reversal of 12555513212 is 21231555521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555513211) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4936013 + ... + 4938555.

Almost surely, 2^12555513212 is an apocalyptic number.

It is an amenable number.

12555513212 is a deficient number, since it is larger than the sum of its proper divisors (11846771380).

12555513212 is a wasteful number, since it uses less digits than its factorization.

12555513212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2657 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The spelling of 12555513212 in words is "twelve billion, five hundred fifty-five million, five hundred thirteen thousand, two hundred twelve".