123211233303121 has 16 divisors (see below), whose sum is σ = 129574338912000. Its totient is φ = 117004691160000.

The previous prime is 123211233303107. The next prime is 123211233303133. The reversal of 123211233303121 is 121303332112321.

It is a cyclic number.

It is not a de Polignac number, because 123211233303121 - 2¹¹ = 123211233301073 is a prime.

It is a super-2 number, since 2×123211233303121² (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 123211233303121.

It is not an unprimeable number, because it can be changed into a prime (123211233304121) 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, 138849021 + ... + 139733578.

It is an arithmetic number, because the mean of its divisors is an integer number (8098396182000).

Almost surely, 2^{123211233303121} is an apocalyptic number.

It is an amenable number.

123211233303121 is a deficient number, since it is larger than the sum of its proper divisors (6363105608879).

123211233303121 is a wasteful number, since it uses less digits than its factorization.

123211233303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278582880.

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

Adding to 123211233303121 its reverse (121303332112321), we get a palindrome (244514565415442).

The spelling of 123211233303121 in words is "one hundred twenty-three trillion, two hundred eleven billion, two hundred thirty-three million, three hundred three thousand, one hundred twenty-one".