123331321013221 has 8 divisors (see below), whose sum is σ = 130586414302080. Its totient is φ = 116076262135488.

The previous prime is 123331321013179. The next prime is 123331321013231. The reversal of 123331321013221 is 122310123133321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123331321013221 - 2⁹ = 123331321012709 is a prime.

It is a super-2 number, since 2×123331321013221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123331321013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123331321013231) 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 7 ways as a sum of consecutive naturals, for example, 1033551 + ... + 15739468.

It is an arithmetic number, because the mean of its divisors is an integer number (16323301787760).

Almost surely, 2^{123331321013221} is an apocalyptic number.

It is an amenable number.

123331321013221 is a deficient number, since it is larger than the sum of its proper divisors (7255093288859).

123331321013221 is a wasteful number, since it uses less digits than its factorization.

123331321013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17205563.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 123331321013221 its reverse (122310123133321), we get a palindrome (245641444146542).

The spelling of 123331321013221 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, three hundred twenty-one million, thirteen thousand, two hundred twenty-one".