12566227 has 2 divisors, whose sum is σ = 12566228. Its totient is φ = 12566226.

The previous prime is 12566207. The next prime is 12566237. The reversal of 12566227 is 72266521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12566227 is a prime.

It is a super-2 number, since 2×12566227² = 315820122031058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12566207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6283113 + 6283114.

It is an arithmetic number, because the mean of its divisors is an integer number (6283114).

Almost surely, 2^12566227 is an apocalyptic number.

12566227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12566227 is an equidigital number, since it uses as much as digits as its factorization.

12566227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 12566227 is about 3544.8874453218. The cubic root of 12566227 is about 232.4885846324.

The spelling of 12566227 in words is "twelve million, five hundred sixty-six thousand, two hundred twenty-seven".