22264221 has 8 divisors (see below), whose sum is σ = 33926464. Its totient is φ = 12722400.

The previous prime is 22264213. The next prime is 22264241. The reversal of 22264221 is 12246222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22264221 - 2³ = 22264213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1060201 = 22264221 / (2 + 2 + 2 + 6 + 4 + 2 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22264201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530080 + ... + 530121.

It is an arithmetic number, because the mean of its divisors is an integer number (4240808).

Almost surely, 2^22264221 is an apocalyptic number.

22264221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22264221 is a deficient number, since it is larger than the sum of its proper divisors (11662243).

22264221 is a wasteful number, since it uses less digits than its factorization.

22264221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060211.

The product of its digits is 768, while the sum is 21.

The square root of 22264221 is about 4718.4977482245. The cubic root of 22264221 is about 281.3212260100.

The spelling of 22264221 in words is "twenty-two million, two hundred sixty-four thousand, two hundred twenty-one".