204324453221 has 8 divisors (see below), whose sum is σ = 234264511104. Its totient is φ = 174572107920.

The previous prime is 204324453173. The next prime is 204324453227. The reversal of 204324453221 is 122354423402.

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-204324453221 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 (204324453227) 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, 46925810 + ... + 46930163.

It is an arithmetic number, because the mean of its divisors is an integer number (29283063888).

Almost surely, 2^204324453221 is an apocalyptic number.

It is an amenable number.

204324453221 is a deficient number, since it is larger than the sum of its proper divisors (29940057883).

204324453221 is an equidigital number, since it uses as much as digits as its factorization.

204324453221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93856291.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 204324453221 its reverse (122354423402), we get a palindrome (326678876623).

The spelling of 204324453221 in words is "two hundred four billion, three hundred twenty-four million, four hundred fifty-three thousand, two hundred twenty-one".