204021321033 has 8 divisors (see below), whose sum is σ = 272472196288. Its totient is φ = 135792329904.

The previous prime is 204021321017. The next prime is 204021321139. The reversal of 204021321033 is 330123120402.

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

It is not a de Polignac number, because 204021321033 - 2⁴ = 204021321017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204021321433) 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, 55468885 + ... + 55472562.

It is an arithmetic number, because the mean of its divisors is an integer number (34059024536).

Almost surely, 2^204021321033 is an apocalyptic number.

It is an amenable number.

204021321033 is a deficient number, since it is larger than the sum of its proper divisors (68450875255).

204021321033 is a wasteful number, since it uses less digits than its factorization.

204021321033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110942063.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 204021321033 its reverse (330123120402), we get a palindrome (534144441435).

The spelling of 204021321033 in words is "two hundred four billion, twenty-one million, three hundred twenty-one thousand, thirty-three".