22185227 has 2 divisors, whose sum is σ = 22185228. Its totient is φ = 22185226.

The previous prime is 22185197. The next prime is 22185253. The reversal of 22185227 is 72258122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22185227 - 2¹⁴ = 22168843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22185227.

It is not a weakly prime, because it can be changed into another prime (22185277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11092613 + 11092614.

It is an arithmetic number, because the mean of its divisors is an integer number (11092614).

Almost surely, 2^22185227 is an apocalyptic number.

22185227 is a deficient number, since it is larger than the sum of its proper divisors (1).

22185227 is an equidigital number, since it uses as much as digits as its factorization.

22185227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 29.

The square root of 22185227 is about 4710.1196375464. The cubic root of 22185227 is about 280.9881202156.

The spelling of 22185227 in words is "twenty-two million, one hundred eighty-five thousand, two hundred twenty-seven".