123223023121 has 16 divisors (see below), whose sum is σ = 135544102848. Its totient is φ = 111091435200.

The previous prime is 123223023113. The next prime is 123223023139. The reversal of 123223023121 is 121320322321.

It is a cyclic number.

It is not a de Polignac number, because 123223023121 - 2³ = 123223023113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123223023092 and 123223023101.

It is not an unprimeable number, because it can be changed into a prime (123223023101) 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, 752035 + ... + 901111.

It is an arithmetic number, because the mean of its divisors is an integer number (8471506428).

Almost surely, 2^123223023121 is an apocalyptic number.

123223023121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123223023121 is a deficient number, since it is larger than the sum of its proper divisors (12321079727).

123223023121 is a wasteful number, since it uses less digits than its factorization.

123223023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149712.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123223023121 its reverse (121320322321), we get a palindrome (244543345442).

The spelling of 123223023121 in words is "one hundred twenty-three billion, two hundred twenty-three million, twenty-three thousand, one hundred twenty-one".