22252209 has 16 divisors (see below), whose sum is σ = 34549632. Its totient is φ = 12475008.

The previous prime is 22252189. The next prime is 22252213. The reversal of 22252209 is 90225222.

It is not a de Polignac number, because 22252209 - 2⁵ = 22252177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22252229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8884 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (2159352).

Almost surely, 2^22252209 is an apocalyptic number.

It is an amenable number.

22252209 is a deficient number, since it is larger than the sum of its proper divisors (12297423).

22252209 is a wasteful number, since it uses less digits than its factorization.

22252209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20056.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22252209 is about 4717.2247137485. The cubic root of 22252209 is about 281.2706240678.

The spelling of 22252209 in words is "twenty-two million, two hundred fifty-two thousand, two hundred nine".