12556227 has 4 divisors (see below), whose sum is σ = 16741640. Its totient is φ = 8370816.

The previous prime is 12556223. The next prime is 12556231. The reversal of 12556227 is 72265521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12556223) and next prime (12556231).

It is not a de Polignac number, because 12556227 - 2² = 12556223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12556194 and 12556203.

It is not an unprimeable number, because it can be changed into a prime (12556223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092702 + ... + 2092707.

It is an arithmetic number, because the mean of its divisors is an integer number (4185410).

Almost surely, 2^12556227 is an apocalyptic number.

12556227 is a deficient number, since it is larger than the sum of its proper divisors (4185413).

12556227 is an equidigital number, since it uses as much as digits as its factorization.

12556227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185412.

The product of its digits is 8400, while the sum is 30.

The square root of 12556227 is about 3543.4766825817. The cubic root of 12556227 is about 232.4268980492.

The spelling of 12556227 in words is "twelve million, five hundred fifty-six thousand, two hundred twenty-seven".