204225442321 has 8 divisors (see below), whose sum is σ = 216265347144. Its totient is φ = 192188497920.

The previous prime is 204225442273. The next prime is 204225442339. The reversal of 204225442321 is 123244522402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 99754273921 + 104471168400 = 315839^2 + 323220^2 .

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

It is not a de Polignac number, because 204225442321 - 2⁷ = 204225442193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204225442381) 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, 597280 + ... + 874753.

It is an arithmetic number, because the mean of its divisors is an integer number (27033168393).

Almost surely, 2^204225442321 is an apocalyptic number.

It is an amenable number.

204225442321 is a deficient number, since it is larger than the sum of its proper divisors (12039904823).

204225442321 is a wasteful number, since it uses less digits than its factorization.

204225442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480211.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 204225442321 its reverse (123244522402), we get a palindrome (327469964723).

The spelling of 204225442321 in words is "two hundred four billion, two hundred twenty-five million, four hundred forty-two thousand, three hundred twenty-one".