123221120232123 has 12 divisors (see below), whose sum is σ = 178121002728240. Its totient is φ = 82085133409296.

The previous prime is 123221120232109. The next prime is 123221120232167. The reversal of 123221120232123 is 321232021122321.

123221120232123 is a `hidden beast` number, since 1 + 2 + 32 + 211 + 202 + 3 + 212 + 3 = 666.

It is not a de Polignac number, because 123221120232123 - 2⁶ = 123221120232059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123221120232923) 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 11 ways as a sum of consecutive naturals, for example, 5189994036 + ... + 5190017777.

It is an arithmetic number, because the mean of its divisors is an integer number (14843416894020).

Almost surely, 2^{123221120232123} is an apocalyptic number.

123221120232123 is a deficient number, since it is larger than the sum of its proper divisors (54899882496117).

123221120232123 is a wasteful number, since it uses less digits than its factorization.

123221120232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380013138 (or 10380013135 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 123221120232123 its reverse (321232021122321), we get a palindrome (444453141354444).

The spelling of 123221120232123 in words is "one hundred twenty-three trillion, two hundred twenty-one billion, one hundred twenty million, two hundred thirty-two thousand, one hundred twenty-three".