23020110021 has 4 divisors (see below), whose sum is σ = 30693480032. Its totient is φ = 15346740012.

The previous prime is 23020110017. The next prime is 23020110031. The reversal of 23020110021 is 12001102032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23020110021 - 2² = 23020110017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23020109979 and 23020110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020110011) 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, 3836685001 + ... + 3836685006.

It is an arithmetic number, because the mean of its divisors is an integer number (7673370008).

Almost surely, 2^23020110021 is an apocalyptic number.

It is an amenable number.

23020110021 is a deficient number, since it is larger than the sum of its proper divisors (7673370011).

23020110021 is an equidigital number, since it uses as much as digits as its factorization.

23020110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673370010.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 23020110021 its reverse (12001102032), we get a palindrome (35021212053).

The spelling of 23020110021 in words is "twenty-three billion, twenty million, one hundred ten thousand, twenty-one".