12315566123227 has 2 divisors, whose sum is σ = 12315566123228. Its totient is φ = 12315566123226.

The previous prime is 12315566123083. The next prime is 12315566123239. The reversal of 12315566123227 is 72232166551321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12315566123227 is a prime.

It is not a weakly prime, because it can be changed into another prime (12315566123527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157783061613 + 6157783061614.

It is an arithmetic number, because the mean of its divisors is an integer number (6157783061614).

Almost surely, 2^{12315566123227} is an apocalyptic number.

12315566123227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315566123227 is an equidigital number, since it uses as much as digits as its factorization.

12315566123227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 46.

The spelling of 12315566123227 in words is "twelve trillion, three hundred fifteen billion, five hundred sixty-six million, one hundred twenty-three thousand, two hundred twenty-seven".