20023101123 has 4 divisors (see below), whose sum is σ = 26697468168. Its totient is φ = 13348734080.

The previous prime is 20023101089. The next prime is 20023101149. The reversal of 20023101123 is 32110132002.

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 20023101123 - 2²⁴ = 20006323907 is a prime.

It is a super-2 number, since 2×20023101123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20023106123) 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, 3337183518 + ... + 3337183523.

It is an arithmetic number, because the mean of its divisors is an integer number (6674367042).

Almost surely, 2^20023101123 is an apocalyptic number.

20023101123 is a deficient number, since it is larger than the sum of its proper divisors (6674367045).

20023101123 is an equidigital number, since it uses as much as digits as its factorization.

20023101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674367044.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20023101123 its reverse (32110132002), we get a palindrome (52133233125).

The spelling of 20023101123 in words is "twenty billion, twenty-three million, one hundred one thousand, one hundred twenty-three".