205220201 has 4 divisors (see below), whose sum is σ = 205950804. Its totient is φ = 204489600.

The previous prime is 205220179. The next prime is 205220203. The reversal of 205220201 is 102022502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91776400 + 113443801 = 9580^2 + 10651^2 .

It is a cyclic number.

It is not a de Polignac number, because 205220201 - 2⁶ = 205220137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205220203) 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, 364880 + ... + 365441.

It is an arithmetic number, because the mean of its divisors is an integer number (51487701).

Almost surely, 2^205220201 is an apocalyptic number.

It is an amenable number.

205220201 is a deficient number, since it is larger than the sum of its proper divisors (730603).

205220201 is an equidigital number, since it uses as much as digits as its factorization.

205220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730602.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 205220201 is about 14325.5087518734. The cubic root of 205220201 is about 589.8478981659.

Adding to 205220201 its reverse (102022502), we get a palindrome (307242703).

The spelling of 205220201 in words is "two hundred five million, two hundred twenty thousand, two hundred one".