123320202000123 has 64 divisors (see below), whose sum is σ = 178956875059200. Its totient is φ = 75241304635392.

The previous prime is 123320201999933. The next prime is 123320202000227. The reversal of 123320202000123 is 321000202023321.

It is a happy number.

It is not a de Polignac number, because 123320202000123 - 2⁹ = 123320201999611 is a prime.

It is a super-2 number, since 2×123320202000123² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123320202000123.

It is not an unprimeable number, because it can be changed into a prime (123320202000823) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 231459090 + ... + 231991272.

It is an arithmetic number, because the mean of its divisors is an integer number (2796201172800).

Almost surely, 2^{123320202000123} is an apocalyptic number.

123320202000123 is a deficient number, since it is larger than the sum of its proper divisors (55636673059077).

123320202000123 is a wasteful number, since it uses less digits than its factorization.

123320202000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532876.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 123320202000123 its reverse (321000202023321), we get a palindrome (444320404023444).

The spelling of 123320202000123 in words is "one hundred twenty-three trillion, three hundred twenty billion, two hundred two million, one hundred twenty-three", and thus it is an aban number.