123302131303021 has 4 divisors (see below), whose sum is σ = 134511415966944. Its totient is φ = 112092846639100.

The previous prime is 123302131302971. The next prime is 123302131303027. The reversal of 123302131303021 is 120303131203321.

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 123302131303021 - 2¹³ = 123302131294829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123302131303027) 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, 5604642331945 + ... + 5604642331966.

It is an arithmetic number, because the mean of its divisors is an integer number (33627853991736).

Almost surely, 2^{123302131303021} is an apocalyptic number.

123302131303021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123302131303021 is a deficient number, since it is larger than the sum of its proper divisors (11209284663923).

123302131303021 is a wasteful number, since it uses less digits than its factorization.

123302131303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11209284663922.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 123302131303021 its reverse (120303131203321), we get a palindrome (243605262506342).

The spelling of 123302131303021 in words is "one hundred twenty-three trillion, three hundred two billion, one hundred thirty-one million, three hundred three thousand, twenty-one".