204122211 has 4 divisors (see below), whose sum is σ = 272162952. Its totient is φ = 136081472.

The previous prime is 204122203. The next prime is 204122221. The reversal of 204122211 is 112221402.

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 204122211 - 2³ = 204122203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204122201) 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, 34020366 + ... + 34020371.

It is an arithmetic number, because the mean of its divisors is an integer number (68040738).

Almost surely, 2^204122211 is an apocalyptic number.

204122211 is a deficient number, since it is larger than the sum of its proper divisors (68040741).

204122211 is an equidigital number, since it uses as much as digits as its factorization.

204122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68040740.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 204122211 is about 14287.1344572661. The cubic root of 204122211 is about 588.7940617309.

Adding to 204122211 its reverse (112221402), we get a palindrome (316343613).

The spelling of 204122211 in words is "two hundred four million, one hundred twenty-two thousand, two hundred eleven".