22144207 has 4 divisors (see below), whose sum is σ = 22166560. Its totient is φ = 22121856.

The previous prime is 22144189. The next prime is 22144219. The reversal of 22144207 is 70244122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22144207 - 2⁷ = 22144079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9618 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (5541640).

Almost surely, 2^22144207 is an apocalyptic number.

22144207 is a deficient number, since it is larger than the sum of its proper divisors (22353).

22144207 is a wasteful number, since it uses less digits than its factorization.

22144207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22352.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 22144207 is about 4705.7631687113. The cubic root of 22144207 is about 280.8148330720.

Adding to 22144207 its reverse (70244122), we get a palindrome (92388329).

The spelling of 22144207 in words is "twenty-two million, one hundred forty-four thousand, two hundred seven".