204221322 has 12 divisors (see below), whose sum is σ = 442479570. Its totient is φ = 68073768.

The previous prime is 204221321. The next prime is 204221327. The reversal of 204221322 is 223122402.

It can be written as a sum of positive squares in only one way, i.e., 199063881 + 5157441 = 14109^2 + 2271^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11345629 = 204221322 / (2 + 0 + 4 + 2 + 2 + 1 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 204221295 and 204221304.

It is not an unprimeable number, because it can be changed into a prime (204221321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5672797 + ... + 5672832.

Almost surely, 2^204221322 is an apocalyptic number.

204221322 is an abundant number, since it is smaller than the sum of its proper divisors (238258248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204221322 is a wasteful number, since it uses less digits than its factorization.

204221322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345637 (or 11345634 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204221322 is about 14290.6025765186. The cubic root of 204221322 is about 588.8893421116.

Adding to 204221322 its reverse (223122402), we get a palindrome (427343724).

The spelling of 204221322 in words is "two hundred four million, two hundred twenty-one thousand, three hundred twenty-two".