123121221222023 has 4 divisors (see below), whose sum is σ = 123121362728568. Its totient is φ = 123121079715480.

The previous prime is 123121221221993. The next prime is 123121221222037. The reversal of 123121221222023 is 320222122121321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123121221222023 - 2²⁸ = 123120952786567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123121221221983 and 123121221222001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121221822023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69440036 + ... + 71191017.

It is an arithmetic number, because the mean of its divisors is an integer number (30780340682142).

Almost surely, 2^{123121221222023} is an apocalyptic number.

123121221222023 is a deficient number, since it is larger than the sum of its proper divisors (141506545).

123121221222023 is an equidigital number, since it uses as much as digits as its factorization.

123121221222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141506544.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 123121221222023 its reverse (320222122121321), we get a palindrome (443343343343344).

The spelling of 123121221222023 in words is "one hundred twenty-three trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, twenty-three".