12745375121 has 2 divisors, whose sum is σ = 12745375122. Its totient is φ = 12745375120.

The previous prime is 12745375103. The next prime is 12745375193. The reversal of 12745375121 is 12157354721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9228292096 + 3517083025 = 96064^2 + 59305^2 .

It is a cyclic number.

It is not a de Polignac number, because 12745375121 - 2¹⁸ = 12745112977 is a prime.

It is not a weakly prime, because it can be changed into another prime (12741375121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6372687560 + 6372687561.

It is an arithmetic number, because the mean of its divisors is an integer number (6372687561).

Almost surely, 2^12745375121 is an apocalyptic number.

It is an amenable number.

12745375121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12745375121 is an equidigital number, since it uses as much as digits as its factorization.

12745375121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 38.

The spelling of 12745375121 in words is "twelve billion, seven hundred forty-five million, three hundred seventy-five thousand, one hundred twenty-one".