22271149 has 2 divisors, whose sum is σ = 22271150. Its totient is φ = 22271148.

The previous prime is 22271147. The next prime is 22271167. The reversal of 22271149 is 94117222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 3305124 = 4355^2 + 1818^2 .

It is a cyclic number.

It is not a de Polignac number, because 22271149 - 2¹ = 22271147 is a prime.

Together with 22271147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22271147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11135574 + 11135575.

It is an arithmetic number, because the mean of its divisors is an integer number (11135575).

Almost surely, 2^22271149 is an apocalyptic number.

It is an amenable number.

22271149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22271149 is an equidigital number, since it uses as much as digits as its factorization.

22271149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 22271149 is about 4719.2318230831. The cubic root of 22271149 is about 281.3504027376.

The spelling of 22271149 in words is "twenty-two million, two hundred seventy-one thousand, one hundred forty-nine".