13121330112331 has 16 divisors (see below), whose sum is σ = 15487484313600. Its totient is φ = 10878467847840.

The previous prime is 13121330112299. The next prime is 13121330112361. The reversal of 13121330112331 is 13321103312131.

It is a cyclic number.

It is not a de Polignac number, because 13121330112331 - 2⁵ = 13121330112299 is a prime.

It is a super-2 number, since 2×13121330112331² (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 = 13121330112296 and 13121330112305.

It is not an unprimeable number, because it can be changed into a prime (13121330112361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15089371 + ... + 15935236.

It is an arithmetic number, because the mean of its divisors is an integer number (967967769600).

Almost surely, 2^{13121330112331} is an apocalyptic number.

13121330112331 is a deficient number, since it is larger than the sum of its proper divisors (2366154201269).

13121330112331 is a wasteful number, since it uses less digits than its factorization.

13121330112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31026594.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 13121330112331 its reverse (13321103312131), we get a palindrome (26442433424462).

The spelling of 13121330112331 in words is "thirteen trillion, one hundred twenty-one billion, three hundred thirty million, one hundred twelve thousand, three hundred thirty-one".