22144249 has 2 divisors, whose sum is σ = 22144250. Its totient is φ = 22144248.

The previous prime is 22144247. The next prime is 22144259. The reversal of 22144249 is 94244122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21790224 + 354025 = 4668^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 22144249 - 2¹ = 22144247 is a prime.

Together with 22144247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22144247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072124 + 11072125.

It is an arithmetic number, because the mean of its divisors is an integer number (11072125).

Almost surely, 2^22144249 is an apocalyptic number.

It is an amenable number.

22144249 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144249 is an equidigital number, since it uses as much as digits as its factorization.

22144249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 22144249 is about 4705.7676313222. The cubic root of 22144249 is about 280.8150106085.

The spelling of 22144249 in words is "twenty-two million, one hundred forty-four thousand, two hundred forty-nine".