204520211 has 8 divisors (see below), whose sum is σ = 233833824. Its totient is φ = 175230720.

The previous prime is 204520207. The next prime is 204520219. The reversal of 204520211 is 112025402.

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

It is not a de Polignac number, because 204520211 - 2² = 204520207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204520211.

It is not an unprimeable number, because it can be changed into a prime (204520219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19181 + ... + 27873.

It is an arithmetic number, because the mean of its divisors is an integer number (29229228).

Almost surely, 2^204520211 is an apocalyptic number.

204520211 is a deficient number, since it is larger than the sum of its proper divisors (29313613).

204520211 is an equidigital number, since it uses as much as digits as its factorization.

204520211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12061.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 204520211 is about 14301.0562896592. The cubic root of 204520211 is about 589.1764925858.

Adding to 204520211 its reverse (112025402), we get a palindrome (316545613).

The spelling of 204520211 in words is "two hundred four million, five hundred twenty thousand, two hundred eleven".