204033221 has 8 divisors (see below), whose sum is σ = 236133120. Its totient is φ = 172671408.

The previous prime is 204033149. The next prime is 204033239. The reversal of 204033221 is 122330402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-204033221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 204033221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204033521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183926 + ... + 185031.

It is an arithmetic number, because the mean of its divisors is an integer number (29516640).

Almost surely, 2^204033221 is an apocalyptic number.

It is an amenable number.

204033221 is a deficient number, since it is larger than the sum of its proper divisors (32099899).

204033221 is an equidigital number, since it uses as much as digits as its factorization.

204033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369043.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 204033221 is about 14284.0197773596. The cubic root of 204033221 is about 588.7084848935.

Adding to 204033221 its reverse (122330402), we get a palindrome (326363623).

The spelling of 204033221 in words is "two hundred four million, thirty-three thousand, two hundred twenty-one".