22896221 has 4 divisors (see below), whose sum is σ = 22905792. Its totient is φ = 22886652.

The previous prime is 22896217. The next prime is 22896233. The reversal of 22896221 is 12269822.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12269822 = 2 ⋅6134911.

It is a cyclic number.

It is not a de Polignac number, because 22896221 - 2² = 22896217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22896271) 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, 2390 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (5726448).

Almost surely, 2^22896221 is an apocalyptic number.

It is an amenable number.

22896221 is a deficient number, since it is larger than the sum of its proper divisors (9571).

22896221 is an equidigital number, since it uses as much as digits as its factorization.

22896221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570.

The product of its digits is 6912, while the sum is 32.

The square root of 22896221 is about 4784.9995820271. Note that the first 3 decimals coincide. The cubic root of 22896221 is about 283.9583230848.

The spelling of 22896221 in words is "twenty-two million, eight hundred ninety-six thousand, two hundred twenty-one".