22188227 has 2 divisors, whose sum is σ = 22188228. Its totient is φ = 22188226.

The previous prime is 22188223. The next prime is 22188239. The reversal of 22188227 is 72288122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22188227 - 2² = 22188223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22188193 and 22188202.

It is not a weakly prime, because it can be changed into another prime (22188223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11094113 + 11094114.

It is an arithmetic number, because the mean of its divisors is an integer number (11094114).

Almost surely, 2^22188227 is an apocalyptic number.

22188227 is a deficient number, since it is larger than the sum of its proper divisors (1).

22188227 is an equidigital number, since it uses as much as digits as its factorization.

22188227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 32.

The square root of 22188227 is about 4710.4380900294. The cubic root of 22188227 is about 281.0007851956. Note that the first 3 decimals are identical.

The spelling of 22188227 in words is "twenty-two million, one hundred eighty-eight thousand, two hundred twenty-seven".