22023221 has 8 divisors (see below), whose sum is σ = 24149664. Its totient is φ = 19917520.

The previous prime is 22023217. The next prime is 22023227. The reversal of 22023221 is 12232022.

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

It is a cyclic number.

It is not a de Polignac number, because 22023221 - 2² = 22023217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22023196 and 22023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22023227) 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, 2915 + ... + 7248.

It is an arithmetic number, because the mean of its divisors is an integer number (3018708).

Almost surely, 2^22023221 is an apocalyptic number.

It is an amenable number.

22023221 is a deficient number, since it is larger than the sum of its proper divisors (2126443).

22023221 is a wasteful number, since it uses less digits than its factorization.

22023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10371.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22023221 is about 4692.8904738977. The cubic root of 22023221 is about 280.3024834841.

Adding to 22023221 its reverse (12232022), we get a palindrome (34255243).

The spelling of 22023221 in words is "twenty-two million, twenty-three thousand, two hundred twenty-one".