204304210111 has 4 divisors (see below), whose sum is σ = 204355431000. Its totient is φ = 204252989224.

The previous prime is 204304210091. The next prime is 204304210217. The reversal of 204304210111 is 111012403402.

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 204304210111 - 2¹⁷ = 204304079039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204304280111) 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, 25604461 + ... + 25612438.

It is an arithmetic number, because the mean of its divisors is an integer number (51088857750).

Almost surely, 2^204304210111 is an apocalyptic number.

204304210111 is a deficient number, since it is larger than the sum of its proper divisors (51220889).

204304210111 is an equidigital number, since it uses as much as digits as its factorization.

204304210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51220888.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 204304210111 its reverse (111012403402), we get a palindrome (315316613513).

The spelling of 204304210111 in words is "two hundred four billion, three hundred four million, two hundred ten thousand, one hundred eleven".