23023222021 has 4 divisors (see below), whose sum is σ = 23089571712. Its totient is φ = 22956872332.

The previous prime is 23023222007. The next prime is 23023222063. The reversal of 23023222021 is 12022232032.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23023222021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23023222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23023220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33174325 + ... + 33175018.

It is an arithmetic number, because the mean of its divisors is an integer number (5772392928).

Almost surely, 2^23023222021 is an apocalyptic number.

It is an amenable number.

23023222021 is a deficient number, since it is larger than the sum of its proper divisors (66349691).

23023222021 is an equidigital number, since it uses as much as digits as its factorization.

23023222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66349690.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 23023222021 its reverse (12022232032), we get a palindrome (35045454053).

The spelling of 23023222021 in words is "twenty-three billion, twenty-three million, two hundred twenty-two thousand, twenty-one".