204422004211221 has 12 divisors (see below), whose sum is σ = 295282039088140. Its totient is φ = 136278654240960.

The previous prime is 204422004211163. The next prime is 204422004211309. The reversal of 204422004211221 is 122112400224402.

204422004211221 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 2 + 200 + 421 + 12 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93096060876900 + 111325943334321 = 9648630^2 + 10551111^2 .

It is not a de Polignac number, because 204422004211221 - 2⁷ = 204422004211093 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 (204422004213221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223008856 + ... + 223923633.

Almost surely, 2^{204422004211221} is an apocalyptic number.

It is an amenable number.

204422004211221 is a deficient number, since it is larger than the sum of its proper divisors (90860034876919).

204422004211221 is a wasteful number, since it uses less digits than its factorization.

204422004211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446983316 (or 446983313 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 204422004211221 its reverse (122112400224402), we get a palindrome (326534404435623).

The spelling of 204422004211221 in words is "two hundred four trillion, four hundred twenty-two billion, four million, two hundred eleven thousand, two hundred twenty-one".