13331122131 has 4 divisors (see below), whose sum is σ = 17774829512. Its totient is φ = 8887414752.

The previous prime is 13331122117. The next prime is 13331122177. The reversal of 13331122131 is 13122113331.

It is a happy number.

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

It is not a de Polignac number, because 13331122131 - 2⁹ = 13331121619 is a prime.

It is a super-2 number, since 2×13331122131² (a number of 21 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 = 13331122098 and 13331122107.

It is not an unprimeable number, because it can be changed into a prime (13331122531) 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, 2221853686 + ... + 2221853691.

It is an arithmetic number, because the mean of its divisors is an integer number (4443707378).

Almost surely, 2^13331122131 is an apocalyptic number.

13331122131 is a deficient number, since it is larger than the sum of its proper divisors (4443707381).

13331122131 is an equidigital number, since it uses as much as digits as its factorization.

13331122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443707380.

The product of its digits is 324, while the sum is 21.

Adding to 13331122131 its reverse (13122113331), we get a palindrome (26453235462).

The spelling of 13331122131 in words is "thirteen billion, three hundred thirty-one million, one hundred twenty-two thousand, one hundred thirty-one".