22232032021 has 4 divisors (see below), whose sum is σ = 22232844544. Its totient is φ = 22231219500.

The previous prime is 22232032007. The next prime is 22232032037. The reversal of 22232032021 is 12023023222.

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 not a de Polignac number, because 22232032021 - 2¹⁷ = 22231900949 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 22232032021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232032721) 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, 363735 + ... + 420436.

It is an arithmetic number, because the mean of its divisors is an integer number (5558211136).

Almost surely, 2^22232032021 is an apocalyptic number.

It is an amenable number.

22232032021 is a deficient number, since it is larger than the sum of its proper divisors (812523).

22232032021 is an equidigital number, since it uses as much as digits as its factorization.

22232032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812522.

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

Adding to 22232032021 its reverse (12023023222), we get a palindrome (34255055243).

The spelling of 22232032021 in words is "twenty-two billion, two hundred thirty-two million, thirty-two thousand, twenty-one".