12818227 has 2 divisors, whose sum is σ = 12818228. Its totient is φ = 12818226.

The previous prime is 12818191. The next prime is 12818231. The reversal of 12818227 is 72281821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12818227 - 2¹¹ = 12816179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12818297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6409113 + 6409114.

It is an arithmetic number, because the mean of its divisors is an integer number (6409114).

Almost surely, 2^12818227 is an apocalyptic number.

12818227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12818227 is an equidigital number, since it uses as much as digits as its factorization.

12818227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 31.

The square root of 12818227 is about 3580.2551585048. The cubic root of 12818227 is about 234.0323998773.

The spelling of 12818227 in words is "twelve million, eight hundred eighteen thousand, two hundred twenty-seven".