12557212 has 6 divisors (see below), whose sum is σ = 21975128. Its totient is φ = 6278604.

The previous prime is 12557197. The next prime is 12557213. The reversal of 12557212 is 21275521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569648 + ... + 1569655.

Almost surely, 2^12557212 is an apocalyptic number.

It is an amenable number.

12557212 is a deficient number, since it is larger than the sum of its proper divisors (9417916).

12557212 is a wasteful number, since it uses less digits than its factorization.

12557212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139307 (or 3139305 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 12557212 is about 3543.6156676479. The cubic root of 12557212 is about 232.4329756315.

It can be divided in two parts, 12557 and 212, that added together give a square (12769 = 113²).

The spelling of 12557212 in words is "twelve million, five hundred fifty-seven thousand, two hundred twelve".