123120013223 has 12 divisors (see below), whose sum is σ = 130803146160. Its totient is φ = 115864584192.

The previous prime is 123120013217. The next prime is 123120013259. The reversal of 123120013223 is 322310021321.

It is a de Polignac number, because none of the positive numbers 2^k-123120013223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123120013195 and 123120013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120013823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3368615 + ... + 3404967.

It is an arithmetic number, because the mean of its divisors is an integer number (10900262180).

Almost surely, 2^123120013223 is an apocalyptic number.

123120013223 is a deficient number, since it is larger than the sum of its proper divisors (7683132937).

123120013223 is a wasteful number, since it uses less digits than its factorization.

123120013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48106 (or 48089 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123120013223 its reverse (322310021321), we get a palindrome (445430034544).

The spelling of 123120013223 in words is "one hundred twenty-three billion, one hundred twenty million, thirteen thousand, two hundred twenty-three".