204504201211 has 4 divisors (see below), whose sum is σ = 204600259800. Its totient is φ = 204408142624.

The previous prime is 204504201193. The next prime is 204504201221. The reversal of 204504201211 is 112102405402.

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

It is a cyclic number.

It is not a de Polignac number, because 204504201211 - 2⁵ = 204504201179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204504201221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48026101 + ... + 48030358.

It is an arithmetic number, because the mean of its divisors is an integer number (51150064950).

Almost surely, 2^204504201211 is an apocalyptic number.

204504201211 is a deficient number, since it is larger than the sum of its proper divisors (96058589).

204504201211 is an equidigital number, since it uses as much as digits as its factorization.

204504201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96058588.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 204504201211 its reverse (112102405402), we get a palindrome (316606606613).

The spelling of 204504201211 in words is "two hundred four billion, five hundred four million, two hundred one thousand, two hundred eleven".