23120021123 has 16 divisors (see below), whose sum is σ = 25290624000. Its totient is φ = 21054284640.

The previous prime is 23120021077. The next prime is 23120021137. The reversal of 23120021123 is 32112002132.

It is a cyclic number.

It is not a de Polignac number, because 23120021123 - 2⁶ = 23120021059 is a prime.

It is a super-2 number, since 2×23120021123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23120021423) 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, 43961 + ... + 219482.

It is an arithmetic number, because the mean of its divisors is an integer number (1580664000).

Almost surely, 2^23120021123 is an apocalyptic number.

23120021123 is a deficient number, since it is larger than the sum of its proper divisors (2170602877).

23120021123 is a wasteful number, since it uses less digits than its factorization.

23120021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263642.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23120021123 its reverse (32112002132), we get a palindrome (55232023255).

The spelling of 23120021123 in words is "twenty-three billion, one hundred twenty million, twenty-one thousand, one hundred twenty-three".