204301312221 has 8 divisors (see below), whose sum is σ = 272411489344. Its totient is φ = 136196004960.

The previous prime is 204301312183. The next prime is 204301312231. The reversal of 204301312221 is 122213103402.

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

It is not a de Polignac number, because 204301312221 - 2⁷ = 204301312093 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 (204301312231) 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, 1118425 + ... + 1288206.

It is an arithmetic number, because the mean of its divisors is an integer number (34051436168).

Almost surely, 2^204301312221 is an apocalyptic number.

It is an amenable number.

204301312221 is a deficient number, since it is larger than the sum of its proper divisors (68110177123).

204301312221 is a wasteful number, since it uses less digits than its factorization.

204301312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434931.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 204301312221 its reverse (122213103402), we get a palindrome (326514415623).

The spelling of 204301312221 in words is "two hundred four billion, three hundred one million, three hundred twelve thousand, two hundred twenty-one".