22722227 has 6 divisors (see below), whose sum is σ = 24975804. Its totient is φ = 20656460.

The previous prime is 22722223. The next prime is 22722247. The reversal of 22722227 is 72222722.

It is not a de Polignac number, because 22722227 - 2² = 22722223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22722196 and 22722205.

It is not an unprimeable number, because it can be changed into a prime (22722223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93773 + ... + 94014.

It is an arithmetic number, because the mean of its divisors is an integer number (4162634).

Almost surely, 2^22722227 is an apocalyptic number.

22722227 is a deficient number, since it is larger than the sum of its proper divisors (2253577).

22722227 is a wasteful number, since it uses less digits than its factorization.

22722227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187809 (or 187798 counting only the distinct ones).

The product of its digits is 3136, while the sum is 26.

The square root of 22722227 is about 4766.7837165116. The cubic root of 22722227 is about 283.2372036824.

Adding to 22722227 its reverse (72222722), we get a palindrome (94944949).

The spelling of 22722227 in words is "twenty-two million, seven hundred twenty-two thousand, two hundred twenty-seven".