23011220312123 has 4 divisors (see below), whose sum is σ = 23055218821848. Its totient is φ = 22967221802400.

The previous prime is 23011220312071. The next prime is 23011220312149. The reversal of 23011220312123 is 32121302211032.

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 23011220312123 - 2²⁸ = 23010951876667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23011220312923) 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, 21999254078 + ... + 21999255123.

It is an arithmetic number, because the mean of its divisors is an integer number (5763804705462).

Almost surely, 2^{23011220312123} is an apocalyptic number.

23011220312123 is a deficient number, since it is larger than the sum of its proper divisors (43998509725).

23011220312123 is an equidigital number, since it uses as much as digits as its factorization.

23011220312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43998509724.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 23011220312123 its reverse (32121302211032), we get a palindrome (55132522523155).

The spelling of 23011220312123 in words is "twenty-three trillion, eleven billion, two hundred twenty million, three hundred twelve thousand, one hundred twenty-three".