21022322023 has 4 divisors (see below), whose sum is σ = 21936336048. Its totient is φ = 20108308000.

The previous prime is 21022322011. The next prime is 21022322029. The reversal of 21022322023 is 32022322012.

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 21022322023 - 2²⁹ = 20485451111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022322029) 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, 457006978 + ... + 457007023.

It is an arithmetic number, because the mean of its divisors is an integer number (5484084012).

Almost surely, 2^21022322023 is an apocalyptic number.

21022322023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21022322023 is a deficient number, since it is larger than the sum of its proper divisors (914014025).

21022322023 is an equidigital number, since it uses as much as digits as its factorization.

21022322023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914014024.

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

Adding to 21022322023 its reverse (32022322012), we get a palindrome (53044644035).

The spelling of 21022322023 in words is "twenty-one billion, twenty-two million, three hundred twenty-two thousand, twenty-three".