121310013023 has 4 divisors (see below), whose sum is σ = 128445896160. Its totient is φ = 114174129888.

The previous prime is 121310013007. The next prime is 121310013047. The reversal of 121310013023 is 320310013121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121310013023 - 2⁴ = 121310013007 is a prime.

It is a super-2 number, since 2×121310013023² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7135883119 = 121310013023 / (1 + 2 + 1 + 3 + 1 + 0 + 0 + 1 + 3 + 0 + 2 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121310012992 and 121310013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310013053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567941543 + ... + 3567941576.

It is an arithmetic number, because the mean of its divisors is an integer number (32111474040).

Almost surely, 2^121310013023 is an apocalyptic number.

121310013023 is a deficient number, since it is larger than the sum of its proper divisors (7135883137).

121310013023 is an equidigital number, since it uses as much as digits as its factorization.

121310013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7135883136.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121310013023 its reverse (320310013121), we get a palindrome (441620026144).

The spelling of 121310013023 in words is "one hundred twenty-one billion, three hundred ten million, thirteen thousand, twenty-three".