22441921 has 4 divisors (see below), whose sum is σ = 23762052. Its totient is φ = 21121792.

The previous prime is 22441877. The next prime is 22441931. The reversal of 22441921 is 12914422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20657025 + 1784896 = 4545^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 22441921 - 2¹⁹ = 21917633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22441931) 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, 660040 + ... + 660073.

It is an arithmetic number, because the mean of its divisors is an integer number (5940513).

Almost surely, 2^22441921 is an apocalyptic number.

It is an amenable number.

22441921 is a deficient number, since it is larger than the sum of its proper divisors (1320131).

22441921 is a wasteful number, since it uses less digits than its factorization.

22441921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320130.

The product of its digits is 1152, while the sum is 25.

The square root of 22441921 is about 4737.2904703005. The cubic root of 22441921 is about 282.0676907738.

The spelling of 22441921 in words is "twenty-two million, four hundred forty-one thousand, nine hundred twenty-one".