205100201 has 2 divisors, whose sum is σ = 205100202. Its totient is φ = 205100200.

The previous prime is 205100179. The next prime is 205100219. The reversal of 205100201 is 102001502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200958976 + 4141225 = 14176^2 + 2035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205100201 is a prime.

It is not a weakly prime, because it can be changed into another prime (205106201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102550100 + 102550101.

It is an arithmetic number, because the mean of its divisors is an integer number (102550101).

Almost surely, 2^205100201 is an apocalyptic number.

It is an amenable number.

205100201 is a deficient number, since it is larger than the sum of its proper divisors (1).

205100201 is an equidigital number, since it uses as much as digits as its factorization.

205100201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 205100201 is about 14321.3198064983. The cubic root of 205100201 is about 589.7329069708.

Adding to 205100201 its reverse (102001502), we get a palindrome (307101703).

The spelling of 205100201 in words is "two hundred five million, one hundred thousand, two hundred one".