204330011321 has 4 divisors (see below), whose sum is σ = 204331992144. Its totient is φ = 204328030500.

The previous prime is 204330011309. The next prime is 204330011339. The reversal of 204330011321 is 123110033402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204330011321 - 2⁶ = 204330011257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204330011293 and 204330011302.

It is not an unprimeable number, because it can be changed into a prime (204330011341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826655 + ... + 1044996.

It is an arithmetic number, because the mean of its divisors is an integer number (51082998036).

Almost surely, 2^204330011321 is an apocalyptic number.

It is an amenable number.

204330011321 is a deficient number, since it is larger than the sum of its proper divisors (1980823).

204330011321 is a wasteful number, since it uses less digits than its factorization.

204330011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980822.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 204330011321 its reverse (123110033402), we get a palindrome (327440044723).

The spelling of 204330011321 in words is "two hundred four billion, three hundred thirty million, eleven thousand, three hundred twenty-one".