13130312310121 has 4 divisors (see below), whose sum is σ = 13135321970244. Its totient is φ = 13125302650000.

The previous prime is 13130312310083. The next prime is 13130312310149. The reversal of 13130312310121 is 12101321303131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11395991882025 + 1734320428096 = 3375795^2 + 1316936^2 .

It is a cyclic number.

It is not a de Polignac number, because 13130312310121 - 2²³ = 13130303921513 is a prime.

It is a super-2 number, since 2×13130312310121² (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 = 13130312310092 and 13130312310101.

It is not an unprimeable number, because it can be changed into a prime (13130312310151) 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, 2504826130 + ... + 2504831371.

It is an arithmetic number, because the mean of its divisors is an integer number (3283830492561).

Almost surely, 2^{13130312310121} is an apocalyptic number.

It is an amenable number.

13130312310121 is a deficient number, since it is larger than the sum of its proper divisors (5009660123).

13130312310121 is an equidigital number, since it uses as much as digits as its factorization.

13130312310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009660122.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13130312310121 its reverse (12101321303131), we get a palindrome (25231633613252).

The spelling of 13130312310121 in words is "thirteen trillion, one hundred thirty billion, three hundred twelve million, three hundred ten thousand, one hundred twenty-one".