13299137321 has 4 divisors (see below), whose sum is σ = 13423428432. Its totient is φ = 13174846212.

The previous prime is 13299137311. The next prime is 13299137363. The reversal of 13299137321 is 12373199231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12373199231 = 4637 ⋅2668363.

It is a cyclic number.

It is not a de Polignac number, because 13299137321 - 2¹⁰ = 13299136297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13299137311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62145395 + ... + 62145608.

It is an arithmetic number, because the mean of its divisors is an integer number (3355857108).

Almost surely, 2^13299137321 is an apocalyptic number.

It is an amenable number.

13299137321 is a deficient number, since it is larger than the sum of its proper divisors (124291111).

13299137321 is a wasteful number, since it uses less digits than its factorization.

13299137321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124291110.

The product of its digits is 61236, while the sum is 41.

The spelling of 13299137321 in words is "thirteen billion, two hundred ninety-nine million, one hundred thirty-seven thousand, three hundred twenty-one".