13021002131 has 4 divisors (see below), whose sum is σ = 13021322352. Its totient is φ = 13020681912.

The previous prime is 13021002103. The next prime is 13021002133. The reversal of 13021002131 is 13120012031.

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

It is a cyclic number.

It is not a de Polignac number, because 13021002131 - 2⁶ = 13021002067 is a prime.

It is a super-2 number, since 2×13021002131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021002133) 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, 88415 + ... + 184008.

It is an arithmetic number, because the mean of its divisors is an integer number (3255330588).

Almost surely, 2^13021002131 is an apocalyptic number.

13021002131 is a deficient number, since it is larger than the sum of its proper divisors (320221).

13021002131 is an equidigital number, since it uses as much as digits as its factorization.

13021002131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320220.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13021002131 its reverse (13120012031), we get a palindrome (26141014162).

The spelling of 13021002131 in words is "thirteen billion, twenty-one million, two thousand, one hundred thirty-one".