13122013231213 has 24 divisors (see below), whose sum is σ = 14221014998400. Its totient is φ = 12074126779008.

The previous prime is 13122013231207. The next prime is 13122013231231. The reversal of 13122013231213 is 31213231022131.

It is not a de Polignac number, because 13122013231213 - 2⁹ = 13122013230701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122013232213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14356956 + ... + 15243562.

It is an arithmetic number, because the mean of its divisors is an integer number (592542291600).

Almost surely, 2^{13122013231213} is an apocalyptic number.

It is an amenable number.

13122013231213 is a deficient number, since it is larger than the sum of its proper divisors (1099001767187).

13122013231213 is an equidigital number, since it uses as much as digits as its factorization.

13122013231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887269 (or 887232 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 13122013231213 its reverse (31213231022131), we get a palindrome (44335244253344).

The spelling of 13122013231213 in words is "thirteen trillion, one hundred twenty-two billion, thirteen million, two hundred thirty-one thousand, two hundred thirteen".