13131221021313 has 8 divisors (see below), whose sum is σ = 17543381460000. Its totient is φ = 8736603965088.

The previous prime is 13131221021299. The next prime is 13131221021333. The reversal of 13131221021313 is 31312012213131.

13131221021313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13131221021313 - 2⁸ = 13131221021057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13131221021333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4385843868 + ... + 4385846861.

It is an arithmetic number, because the mean of its divisors is an integer number (2192922682500).

Almost surely, 2^{13131221021313} is an apocalyptic number.

It is an amenable number.

13131221021313 is a deficient number, since it is larger than the sum of its proper divisors (4412160438687).

13131221021313 is an equidigital number, since it uses as much as digits as its factorization.

13131221021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8771691231.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13131221021313 its reverse (31312012213131), we get a palindrome (44443233234444).

The spelling of 13131221021313 in words is "thirteen trillion, one hundred thirty-one billion, two hundred twenty-one million, twenty-one thousand, three hundred thirteen".