13121021112313 has 4 divisors (see below), whose sum is σ = 13121244960768. Its totient is φ = 13120797263860.

The previous prime is 13121021112209. The next prime is 13121021112323. The reversal of 13121021112313 is 31321112012131.

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 13121021112313 - 2⁹ = 13121021111801 is a prime.

It is a super-2 number, since 2×13121021112313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121021112323) 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, 111836281 + ... + 111953542.

It is an arithmetic number, because the mean of its divisors is an integer number (3280311240192).

Almost surely, 2^{13121021112313} is an apocalyptic number.

It is an amenable number.

13121021112313 is a deficient number, since it is larger than the sum of its proper divisors (223848455).

13121021112313 is an equidigital number, since it uses as much as digits as its factorization.

13121021112313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223848454.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 13121021112313 its reverse (31321112012131), we get a palindrome (44442133124444).

The spelling of 13121021112313 in words is "thirteen trillion, one hundred twenty-one billion, twenty-one million, one hundred twelve thousand, three hundred thirteen".