13122120121313 has 4 divisors (see below), whose sum is σ = 14996708710080. Its totient is φ = 11247531532548.

The previous prime is 13122120121217. The next prime is 13122120121367. The reversal of 13122120121313 is 31312102122131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13122120121313 - 2⁸ = 13122120121057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122120121393) 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, 937294294373 + ... + 937294294386.

It is an arithmetic number, because the mean of its divisors is an integer number (3749177177520).

Almost surely, 2^{13122120121313} is an apocalyptic number.

It is an amenable number.

13122120121313 is a deficient number, since it is larger than the sum of its proper divisors (1874588588767).

13122120121313 is an equidigital number, since it uses as much as digits as its factorization.

13122120121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874588588766.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13122120121313 its reverse (31312102122131), we get a palindrome (44434222243444).

The spelling of 13122120121313 in words is "thirteen trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, three hundred thirteen".