204300434221 has 6 divisors (see below), whose sum is σ = 221224730730. Its totient is φ = 188585016048.

The previous prime is 204300434213. The next prime is 204300434231. The reversal of 204300434221 is 122434003402.

It is a happy number.

204300434221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6066228996 + 198234205225 = 77886^2 + 445235^2 .

It is not a de Polignac number, because 204300434221 - 2³ = 204300434213 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 (204300434231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 604438986 + ... + 604439323.

It is an arithmetic number, because the mean of its divisors is an integer number (36870788455).

Almost surely, 2^204300434221 is an apocalyptic number.

It is an amenable number.

204300434221 is a deficient number, since it is larger than the sum of its proper divisors (16924296509).

204300434221 is a wasteful number, since it uses less digits than its factorization.

204300434221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208878335 (or 1208878322 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204300434221 its reverse (122434003402), we get a palindrome (326734437623).

The spelling of 204300434221 in words is "two hundred four billion, three hundred million, four hundred thirty-four thousand, two hundred twenty-one".