121312031023013 has 48 divisors (see below), whose sum is σ = 129131488452096. Its totient is φ = 113843009064960.

The previous prime is 121312031023009. The next prime is 121312031023039. The reversal of 121312031023013 is 310320130213121.

It is not a de Polignac number, because 121312031023013 - 2² = 121312031023009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121312031023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312031025013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4634285381 + ... + 4634311557.

It is an arithmetic number, because the mean of its divisors is an integer number (2690239342752).

Almost surely, 2^{121312031023013} is an apocalyptic number.

It is an amenable number.

121312031023013 is a deficient number, since it is larger than the sum of its proper divisors (7819457429083).

121312031023013 is a wasteful number, since it uses less digits than its factorization.

121312031023013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26874 (or 26831 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121312031023013 its reverse (310320130213121), we get a palindrome (431632161236134).

The spelling of 121312031023013 in words is "one hundred twenty-one trillion, three hundred twelve billion, thirty-one million, twenty-three thousand, thirteen".