12502113209 has 2 divisors, whose sum is σ = 12502113210. Its totient is φ = 12502113208.

The previous prime is 12502113083. The next prime is 12502113229. The reversal of 12502113209 is 90231120521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11093987584 + 1408125625 = 105328^2 + 37525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12502113209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12502113229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251056604 + 6251056605.

It is an arithmetic number, because the mean of its divisors is an integer number (6251056605).

Almost surely, 2^12502113209 is an apocalyptic number.

It is an amenable number.

12502113209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12502113209 is an equidigital number, since it uses as much as digits as its factorization.

12502113209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 12502113209 in words is "twelve billion, five hundred two million, one hundred thirteen thousand, two hundred nine".