204005230221 has 16 divisors (see below), whose sum is σ = 293006127680. Its totient is φ = 125509305600.

The previous prime is 204005230181. The next prime is 204005230241. The reversal of 204005230221 is 122032500402.

It is not a de Polignac number, because 204005230221 - 2¹⁴ = 204005213837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204005230241) 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 15 ways as a sum of consecutive naturals, for example, 520855 + ... + 824196.

It is an arithmetic number, because the mean of its divisors is an integer number (18312882980).

Almost surely, 2^204005230221 is an apocalyptic number.

It is an amenable number.

204005230221 is a deficient number, since it is larger than the sum of its proper divisors (89000897459).

204005230221 is a wasteful number, since it uses less digits than its factorization.

204005230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348956.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 204005230221 its reverse (122032500402), we get a palindrome (326037730623).

The spelling of 204005230221 in words is "two hundred four billion, five million, two hundred thirty thousand, two hundred twenty-one".