22294479220209 has 81 divisors (see below), whose sum is σ = 38713522887819. Its totient is φ = 12327044456160.

The previous prime is 22294479220183. The next prime is 22294479220213. The reversal of 22294479220209 is 90202297449222.

The square root of 22294479220209 is 4721703.

It is a perfect power (a square), and thus also a powerful number.

22294479220209 is a `hidden beast` number, since 2 + 2 + 294 + 47 + 92 + 20 + 209 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16264645373025 + 6029833847184 = 4032945^2 + 2455572^2 .

It is not a de Polignac number, because 22294479220209 - 2⁵ = 22294479220177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22294479220259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3073825027 + ... + 3073832279.

Almost surely, 2^{22294479220209} is an apocalyptic number.

22294479220209 is the 4721703-rd square number.

22294479220209 is the 2360852-nd centered octagonal number.

It is an amenable number.

22294479220209 is a deficient number, since it is larger than the sum of its proper divisors (16419043667610).

22294479220209 is an frugal number, since it uses more digits than its factorization.

22294479220209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588 (or 7294 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 22294479220209 in words is "twenty-two trillion, two hundred ninety-four billion, four hundred seventy-nine million, two hundred twenty thousand, two hundred nine".