123123323121 has 16 divisors (see below), whose sum is σ = 168321924288. Its totient is φ = 80007123200.

The previous prime is 123123323111. The next prime is 123123323153. The reversal of 123123323121 is 121323321321.

It is a cyclic number.

It is not a de Polignac number, because 123123323121 - 2¹¹ = 123123321073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123123323091 and 123123323100.

It is not an unprimeable number, because it can be changed into a prime (123123323101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321315 + ... + 591176.

It is an arithmetic number, because the mean of its divisors is an integer number (10520120268).

Almost surely, 2^123123323121 is an apocalyptic number.

It is an amenable number.

123123323121 is a deficient number, since it is larger than the sum of its proper divisors (45198601167).

123123323121 is a wasteful number, since it uses less digits than its factorization.

123123323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913632.

The product of its digits is 1296, while the sum is 24.

Adding to 123123323121 its reverse (121323321321), we get a palindrome (244446644442).

The spelling of 123123323121 in words is "one hundred twenty-three billion, one hundred twenty-three million, three hundred twenty-three thousand, one hundred twenty-one".