123123242321321 has 16 divisors (see below), whose sum is σ = 135428437137408. Its totient is φ = 111928467269520.

The previous prime is 123123242321297. The next prime is 123123242321341.

123123242321321 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-123123242321321 is a prime.

It is a super-2 number, since 2×123123242321321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123123242321341) 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, 88410215 + ... + 89792051.

It is an arithmetic number, because the mean of its divisors is an integer number (8464277321088).

Almost surely, 2^{123123242321321} is an apocalyptic number.

123123242321321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123123242321321 is a deficient number, since it is larger than the sum of its proper divisors (12305194816087).

123123242321321 is an equidigital number, since it uses as much as digits as its factorization.

123123242321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448813 (or 1448791 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The spelling of 123123242321321 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, two hundred forty-two million, three hundred twenty-one thousand, three hundred twenty-one".