13102312921 has 2 divisors, whose sum is σ = 13102312922. Its totient is φ = 13102312920.

The previous prime is 13102312907. The next prime is 13102312987. The reversal of 13102312921 is 12921320131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10107487296 + 2994825625 = 100536^2 + 54725^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102312921 - 2¹⁷ = 13102181849 is a prime.

It is not a weakly prime, because it can be changed into another prime (13102313921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6551156460 + 6551156461.

It is an arithmetic number, because the mean of its divisors is an integer number (6551156461).

Almost surely, 2^13102312921 is an apocalyptic number.

It is an amenable number.

13102312921 is a deficient number, since it is larger than the sum of its proper divisors (1).

13102312921 is an equidigital number, since it uses as much as digits as its factorization.

13102312921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 13102312921 in words is "thirteen billion, one hundred two million, three hundred twelve thousand, nine hundred twenty-one".