204211 has 4 divisors (see below), whose sum is σ = 233392. Its totient is φ = 175032.

The previous prime is 204173. The next prime is 204233. The reversal of 204211 is 112402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204251) 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, 14580 + ... + 14593.

It is an arithmetic number, because the mean of its divisors is an integer number (58348).

2²⁰⁴²¹¹ is an apocalyptic number.

204211 is a deficient number, since it is larger than the sum of its proper divisors (29181).

204211 is an equidigital number, since it uses as much as digits as its factorization.

204211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29180.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 204211 is about 451.8971121837. The cubic root of 204211 is about 58.8879420493.

Adding to 204211 its reverse (112402), we get a palindrome (316613).

Subtracting from 204211 its reverse (112402), we obtain a square (91809 = 303²).

The spelling of 204211 in words is "two hundred four thousand, two hundred eleven", and thus it is an iban number.