204221244 has 12 divisors (see below), whose sum is σ = 476516264. Its totient is φ = 68073744.

The previous prime is 204221197. The next prime is 204221261. The reversal of 204221244 is 442122402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 204221244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509207 + ... + 8509230.

Almost surely, 2^204221244 is an apocalyptic number.

It is an amenable number.

204221244 is an abundant number, since it is smaller than the sum of its proper divisors (272295020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204221244 is a wasteful number, since it uses less digits than its factorization.

204221244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17018444 (or 17018442 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 204221244 is about 14290.5998474522. The cubic root of 204221244 is about 588.8892671385.

Adding to 204221244 its reverse (442122402), we get a palindrome (646343646).

The spelling of 204221244 in words is "two hundred four million, two hundred twenty-one thousand, two hundred forty-four".