204200111 has 4 divisors (see below), whose sum is σ = 204601800. Its totient is φ = 203798424.

The previous prime is 204200089. The next prime is 204200147. The reversal of 204200111 is 111002402.

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-204200111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204200092 and 204200101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204200911) 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, 200081 + ... + 201098.

It is an arithmetic number, because the mean of its divisors is an integer number (51150450).

Almost surely, 2^204200111 is an apocalyptic number.

204200111 is a deficient number, since it is larger than the sum of its proper divisors (401689).

204200111 is an equidigital number, since it uses as much as digits as its factorization.

204200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401688.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 204200111 is about 14289.8604261903. The cubic root of 204200111 is about 588.8689535055.

Adding to 204200111 its reverse (111002402), we get a palindrome (315202513).

The spelling of 204200111 in words is "two hundred four million, two hundred thousand, one hundred eleven".