13221002102131 has 4 divisors (see below), whose sum is σ = 13388356559200. Its totient is φ = 13053647645064.

The previous prime is 13221002102117. The next prime is 13221002102141. The reversal of 13221002102131 is 13120120012231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13221002102131 is a prime.

It is a super-2 number, since 2×13221002102131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13221002102099 and 13221002102108.

It is not an unprimeable number, because it can be changed into a prime (13221002102111) 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, 83677228416 + ... + 83677228573.

It is an arithmetic number, because the mean of its divisors is an integer number (3347089139800).

Almost surely, 2^{13221002102131} is an apocalyptic number.

13221002102131 is a deficient number, since it is larger than the sum of its proper divisors (167354457069).

13221002102131 is an equidigital number, since it uses as much as digits as its factorization.

13221002102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167354457068.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 13221002102131 its reverse (13120120012231), we get a palindrome (26341122114362).

The spelling of 13221002102131 in words is "thirteen trillion, two hundred twenty-one billion, two million, one hundred two thousand, one hundred thirty-one".