205021201 has 16 divisors (see below), whose sum is σ = 258491520. Its totient is φ = 157956480.

The previous prime is 205021199. The next prime is 205021231. The reversal of 205021201 is 102120502.

It is not a de Polignac number, because 205021201 - 2¹ = 205021199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205021231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8106 + ... + 21811.

It is an arithmetic number, because the mean of its divisors is an integer number (16155720).

Almost surely, 2^205021201 is an apocalyptic number.

It is an amenable number.

205021201 is a deficient number, since it is larger than the sum of its proper divisors (53470319).

205021201 is a wasteful number, since it uses less digits than its factorization.

205021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30024.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 205021201 is about 14318.5614151702. The cubic root of 205021201 is about 589.6571799483.

Adding to 205021201 its reverse (102120502), we get a palindrome (307141703).

The spelling of 205021201 in words is "two hundred five million, twenty-one thousand, two hundred one".