204231202301021 has 12 divisors (see below), whose sum is σ = 237575999195388. Its totient is φ = 175054633108992.

The previous prime is 204231202300963. The next prime is 204231202301033. The reversal of 204231202301021 is 120103202132402.

It can be written as a sum of positive squares in 2 ways, for example, as 161696935752121 + 42534266548900 = 12716011^2 + 6521830^2 .

It is not a de Polignac number, because 204231202301021 - 2²² = 204231198106717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204231202301041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4757915 + ... + 20762951.

It is an arithmetic number, because the mean of its divisors is an integer number (19797999932949).

Almost surely, 2^{204231202301021} is an apocalyptic number.

It is an amenable number.

204231202301021 is a deficient number, since it is larger than the sum of its proper divisors (33344796894367).

204231202301021 is a wasteful number, since it uses less digits than its factorization.

204231202301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16265468 (or 16265461 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 204231202301021 its reverse (120103202132402), we get a palindrome (324334404433423).

The spelling of 204231202301021 in words is "two hundred four trillion, two hundred thirty-one billion, two hundred two million, three hundred one thousand, twenty-one".