123321233021 has 16 divisors (see below), whose sum is σ = 145551264768. Its totient is φ = 102247488000.

The previous prime is 123321233017. The next prime is 123321233027. The reversal of 123321233021 is 120332123321.

It is not a de Polignac number, because 123321233021 - 2² = 123321233017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321233027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351821 + ... + 608621.

It is an arithmetic number, because the mean of its divisors is an integer number (9096954048).

Almost surely, 2^123321233021 is an apocalyptic number.

It is an amenable number.

123321233021 is a deficient number, since it is larger than the sum of its proper divisors (22230031747).

123321233021 is a wasteful number, since it uses less digits than its factorization.

123321233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259052.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123321233021 its reverse (120332123321), we get a palindrome (243653356342).

The spelling of 123321233021 in words is "one hundred twenty-three billion, three hundred twenty-one million, two hundred thirty-three thousand, twenty-one".