22522921 has 4 divisors (see below), whose sum is σ = 22859152. Its totient is φ = 22186692.

The previous prime is 22522919. The next prime is 22522939. The reversal of 22522921 is 12922522.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12922522 = 2 ⋅6461261.

It is a cyclic number.

It is not a de Polignac number, because 22522921 - 2¹ = 22522919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22522991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168015 + ... + 168148.

It is an arithmetic number, because the mean of its divisors is an integer number (5714788).

Almost surely, 2^22522921 is an apocalyptic number.

It is an amenable number.

22522921 is a deficient number, since it is larger than the sum of its proper divisors (336231).

22522921 is an equidigital number, since it uses as much as digits as its factorization.

22522921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336230.

The product of its digits is 1440, while the sum is 25.

The square root of 22522921 is about 4745.8319607841. The cubic root of 22522921 is about 282.4066405159.

The spelling of 22522921 in words is "twenty-two million, five hundred twenty-two thousand, nine hundred twenty-one".