12512021579 has 2 divisors, whose sum is σ = 12512021580. Its totient is φ = 12512021578.

The previous prime is 12512021521. The next prime is 12512021591. The reversal of 12512021579 is 97512021521.

12512021579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12512021579 - 2⁸ = 12512021323 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12512021779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256010789 + 6256010790.

It is an arithmetic number, because the mean of its divisors is an integer number (6256010790).

Almost surely, 2^12512021579 is an apocalyptic number.

12512021579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512021579 is an equidigital number, since it uses as much as digits as its factorization.

12512021579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 12512021579 in words is "twelve billion, five hundred twelve million, twenty-one thousand, five hundred seventy-nine".