204231202221321 has 48 divisors (see below), whose sum is σ = 323826314235840. Its totient is φ = 123004545269760.

The previous prime is 204231202221317. The next prime is 204231202221349. The reversal of 204231202221321 is 123122202132402.

204231202221321 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 312 + 0 + 2 + 2 + 21 + 321 = 666.

It is not a de Polignac number, because 204231202221321 - 2² = 204231202221317 is a prime.

It is a super-2 number, since 2×204231202221321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204231202220321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158420425 + ... + 159704393.

It is an arithmetic number, because the mean of its divisors is an integer number (6746381546580).

Almost surely, 2^{204231202221321} is an apocalyptic number.

It is an amenable number.

204231202221321 is a deficient number, since it is larger than the sum of its proper divisors (119595112014519).

204231202221321 is a wasteful number, since it uses less digits than its factorization.

204231202221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294006 (or 1294003 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 204231202221321 its reverse (123122202132402), we get a palindrome (327353404353723).

The spelling of 204231202221321 in words is "two hundred four trillion, two hundred thirty-one billion, two hundred two million, two hundred twenty-one thousand, three hundred twenty-one".