21230023022 has 24 divisors (see below), whose sum is σ = 35415080856. Its totient is φ = 9533642976.

The previous prime is 21230023021. The next prime is 21230023033. The reversal of 21230023022 is 22032003212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230023021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 836288 + ... + 861299.

It is an arithmetic number, because the mean of its divisors is an integer number (1475628369).

Almost surely, 2^21230023022 is an apocalyptic number.

21230023022 is a deficient number, since it is larger than the sum of its proper divisors (14185057834).

21230023022 is a wasteful number, since it uses less digits than its factorization.

21230023022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697652 (or 1697639 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21230023022 its reverse (22032003212), we get a palindrome (43262026234).

The spelling of 21230023022 in words is "twenty-one billion, two hundred thirty million, twenty-three thousand, twenty-two".