204221201 has 4 divisors (see below), whose sum is σ = 206094900. Its totient is φ = 202347504.

The previous prime is 204221197. The next prime is 204221261. The reversal of 204221201 is 102122402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181171600 + 23049601 = 13460^2 + 4801^2 .

It is a cyclic number.

It is not a de Polignac number, because 204221201 - 2² = 204221197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204221261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 936686 + ... + 936903.

It is an arithmetic number, because the mean of its divisors is an integer number (51523725).

Almost surely, 2^204221201 is an apocalyptic number.

It is an amenable number.

204221201 is a deficient number, since it is larger than the sum of its proper divisors (1873699).

204221201 is a wasteful number, since it uses less digits than its factorization.

204221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873698.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 204221201 is about 14290.5983429666. The cubic root of 204221201 is about 588.8892258071.

Adding to 204221201 its reverse (102122402), we get a palindrome (306343603).

The spelling of 204221201 in words is "two hundred four million, two hundred twenty-one thousand, two hundred one".