1313332013021 has 4 divisors (see below), whose sum is σ = 1500950872032. Its totient is φ = 1125713154012.

The previous prime is 1313332013003. The next prime is 1313332013039. The reversal of 1313332013021 is 1203102333131.

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 an interprime number because it is at equal distance from previous prime (1313332013003) and next prime (1313332013039).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313332013021 is a prime.

It is a super-2 number, since 2×1313332013021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313332013221) 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, 93809429495 + ... + 93809429508.

It is an arithmetic number, because the mean of its divisors is an integer number (375237718008).

Almost surely, 2^{1313332013021} is an apocalyptic number.

It is an amenable number.

1313332013021 is a deficient number, since it is larger than the sum of its proper divisors (187618859011).

1313332013021 is an equidigital number, since it uses as much as digits as its factorization.

1313332013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187618859010.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1313332013021 its reverse (1203102333131), we get a palindrome (2516434346152).

The spelling of 1313332013021 in words is "one trillion, three hundred thirteen billion, three hundred thirty-two million, thirteen thousand, twenty-one".