22032921 has 4 divisors (see below), whose sum is σ = 29377232. Its totient is φ = 14688612.

The previous prime is 22032893. The next prime is 22032937. The reversal of 22032921 is 12923022.

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 not a de Polignac number, because 22032921 - 2⁵ = 22032889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22032121) 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, 3672151 + ... + 3672156.

It is an arithmetic number, because the mean of its divisors is an integer number (7344308).

Almost surely, 2^22032921 is an apocalyptic number.

It is an amenable number.

22032921 is a deficient number, since it is larger than the sum of its proper divisors (7344311).

22032921 is an equidigital number, since it uses as much as digits as its factorization.

22032921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344310.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22032921 is about 4693.9238383255. The cubic root of 22032921 is about 280.3436299784.

Adding to 22032921 its reverse (12923022), we get a palindrome (34955943).

The spelling of 22032921 in words is "twenty-two million, thirty-two thousand, nine hundred twenty-one".