12512021513 has 2 divisors, whose sum is σ = 12512021514. Its totient is φ = 12512021512.

The previous prime is 12512021453. The next prime is 12512021521. The reversal of 12512021513 is 31512021521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12247406224 + 264615289 = 110668^2 + 16267^2 .

It is a cyclic number.

It is not a de Polignac number, because 12512021513 - 2¹² = 12512017417 is a prime.

It is not a weakly prime, because it can be changed into another prime (12512021593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256010756 + 6256010757.

It is an arithmetic number, because the mean of its divisors is an integer number (6256010757).

Almost surely, 2^12512021513 is an apocalyptic number.

It is an amenable number.

12512021513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512021513 is an equidigital number, since it uses as much as digits as its factorization.

12512021513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 12512021513 in words is "twelve billion, five hundred twelve million, twenty-one thousand, five hundred thirteen".