13000122231321 has 4 divisors (see below), whose sum is σ = 17333496308432. Its totient is φ = 8666748154212.

The previous prime is 13000122231301. The next prime is 13000122231329. The reversal of 13000122231321 is 12313222100031.

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.

It is not a de Polignac number, because 13000122231321 - 2²⁵ = 13000088676889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13000122231329) 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, 2166687038551 + ... + 2166687038556.

It is an arithmetic number, because the mean of its divisors is an integer number (4333374077108).

Almost surely, 2^{13000122231321} is an apocalyptic number.

It is an amenable number.

13000122231321 is a deficient number, since it is larger than the sum of its proper divisors (4333374077111).

13000122231321 is an equidigital number, since it uses as much as digits as its factorization.

13000122231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333374077110.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13000122231321 its reverse (12313222100031), we get a palindrome (25313344331352).

The spelling of 13000122231321 in words is "thirteen trillion, one hundred twenty-two million, two hundred thirty-one thousand, three hundred twenty-one".