22032232021 has 16 divisors (see below), whose sum is σ = 23562000000. Its totient is φ = 20542061376.

The previous prime is 22032231989. The next prime is 22032232109. The reversal of 22032232021 is 12023223022.

It is a cyclic number.

It is not a de Polignac number, because 22032232021 - 2⁵ = 22032231989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 22032232021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22032032021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272880 + ... + 344278.

It is an arithmetic number, because the mean of its divisors is an integer number (1472625000).

Almost surely, 2^22032232021 is an apocalyptic number.

It is an amenable number.

22032232021 is a deficient number, since it is larger than the sum of its proper divisors (1529767979).

22032232021 is a wasteful number, since it uses less digits than its factorization.

22032232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71676.

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

Adding to 22032232021 its reverse (12023223022), we get a palindrome (34055455043).

The spelling of 22032232021 in words is "twenty-two billion, thirty-two million, two hundred thirty-two thousand, twenty-one".