204321420221 has 8 divisors (see below), whose sum is σ = 218720522400. Its totient is φ = 190286852400.

The previous prime is 204321420217. The next prime is 204321420223. The reversal of 204321420221 is 122024123402.

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

It is a cyclic number.

It is not a de Polignac number, because 204321420221 - 2² = 204321420217 is a prime.

It is a super-2 number, since 2×204321420221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204321420223) 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, 91132430 + ... + 91134671.

It is an arithmetic number, because the mean of its divisors is an integer number (27340065300).

Almost surely, 2^204321420221 is an apocalyptic number.

It is an amenable number.

204321420221 is a deficient number, since it is larger than the sum of its proper divisors (14399102179).

204321420221 is a wasteful number, since it uses less digits than its factorization.

204321420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182267179.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 204321420221 its reverse (122024123402), we get a palindrome (326345543623).

The spelling of 204321420221 in words is "two hundred four billion, three hundred twenty-one million, four hundred twenty thousand, two hundred twenty-one".