12310012011021 has 4 divisors (see below), whose sum is σ = 16413349348032. Its totient is φ = 8206674674012.

The previous prime is 12310012010987. The next prime is 12310012011053. The reversal of 12310012011021 is 12011021001321.

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 12310012011021 - 2²¹ = 12310009913869 is a prime.

It is a super-2 number, since 2×12310012011021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310012011061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051668668501 + ... + 2051668668506.

It is an arithmetic number, because the mean of its divisors is an integer number (4103337337008).

Almost surely, 2^{12310012011021} is an apocalyptic number.

It is an amenable number.

12310012011021 is a deficient number, since it is larger than the sum of its proper divisors (4103337337011).

12310012011021 is an equidigital number, since it uses as much as digits as its factorization.

12310012011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103337337010.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12310012011021 its reverse (12011021001321), we get a palindrome (24321033012342).

The spelling of 12310012011021 in words is "twelve trillion, three hundred ten billion, twelve million, eleven thousand, twenty-one".