22427227 has 2 divisors, whose sum is σ = 22427228. Its totient is φ = 22427226.

The previous prime is 22427221. The next prime is 22427243. The reversal of 22427227 is 72272422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22427227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22427195 and 22427204.

It is not a weakly prime, because it can be changed into another prime (22427221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11213613 + 11213614.

It is an arithmetic number, because the mean of its divisors is an integer number (11213614).

Almost surely, 2^22427227 is an apocalyptic number.

22427227 is a deficient number, since it is larger than the sum of its proper divisors (1).

22427227 is an equidigital number, since it uses as much as digits as its factorization.

22427227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 28.

The square root of 22427227 is about 4735.7393298196. The cubic root of 22427227 is about 282.0061154216.

Adding to 22427227 its reverse (72272422), we get a palindrome (94699649).

The spelling of 22427227 in words is "twenty-two million, four hundred twenty-seven thousand, two hundred twenty-seven".