205204211 has 2 divisors, whose sum is σ = 205204212. Its totient is φ = 205204210.

The previous prime is 205204201. The next prime is 205204243. The reversal of 205204211 is 112402502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205204211 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205204211.

It is not a weakly prime, because it can be changed into another prime (205204201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102602105 + 102602106.

It is an arithmetic number, because the mean of its divisors is an integer number (102602106).

Almost surely, 2^205204211 is an apocalyptic number.

205204211 is a deficient number, since it is larger than the sum of its proper divisors (1).

205204211 is an equidigital number, since it uses as much as digits as its factorization.

205204211 is an evil number, because the sum of its binary digits is even.

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

The square root of 205204211 is about 14324.9506456392. The cubic root of 205204211 is about 589.8325781782.

Adding to 205204211 its reverse (112402502), we get a palindrome (317606713).

The spelling of 205204211 in words is "two hundred five million, two hundred four thousand, two hundred eleven".