123331222331021 has 4 divisors (see below), whose sum is σ = 125068281800544. Its totient is φ = 121594162861500.

The previous prime is 123331222330973. The next prime is 123331222331027. The reversal of 123331222331021 is 120133222133321.

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 123331222331021 - 2²⁶ = 123331155222157 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 (123331222331027) 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, 868529734655 + ... + 868529734796.

It is an arithmetic number, because the mean of its divisors is an integer number (31267070450136).

Almost surely, 2^{123331222331021} is an apocalyptic number.

It is an amenable number.

123331222331021 is a deficient number, since it is larger than the sum of its proper divisors (1737059469523).

123331222331021 is an equidigital number, since it uses as much as digits as its factorization.

123331222331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737059469522.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 123331222331021 its reverse (120133222133321), we get a palindrome (243464444464342).

The spelling of 123331222331021 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, two hundred twenty-two million, three hundred thirty-one thousand, twenty-one".