123121323300111 has 16 divisors (see below), whose sum is σ = 164867297796864. Its totient is φ = 81728119675584.

The previous prime is 123121323300023. The next prime is 123121323300113. The reversal of 123121323300111 is 111003323121321.

It is not a de Polignac number, because 123121323300111 - 2¹⁴ = 123121323283727 is a prime.

It is a super-2 number, since 2×123121323300111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121323300113) 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, 147679350 + ... + 148510716.

It is an arithmetic number, because the mean of its divisors is an integer number (10304206112304).

Almost surely, 2^{123121323300111} is an apocalyptic number.

123121323300111 is a deficient number, since it is larger than the sum of its proper divisors (41745974496753).

123121323300111 is a wasteful number, since it uses less digits than its factorization.

123121323300111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043470.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 123121323300111 its reverse (111003323121321), we get a palindrome (234124646421432).

The spelling of 123121323300111 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, three hundred twenty-three million, three hundred thousand, one hundred eleven".