205442211 has 16 divisors (see below), whose sum is σ = 295293600. Its totient is φ = 126297600.

The previous prime is 205442201. The next prime is 205442213. The reversal of 205442211 is 112244502.

It is not a de Polignac number, because 205442211 - 2⁵ = 205442179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205442213) 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, 48715 + ... + 52763.

It is an arithmetic number, because the mean of its divisors is an integer number (18455850).

Almost surely, 2^205442211 is an apocalyptic number.

205442211 is a deficient number, since it is larger than the sum of its proper divisors (89851389).

205442211 is a wasteful number, since it uses less digits than its factorization.

205442211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5366.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 205442211 is about 14333.2554222689. The cubic root of 205442211 is about 590.0605233325.

Adding to 205442211 its reverse (112244502), we get a palindrome (317686713).

The spelling of 205442211 in words is "two hundred five million, four hundred forty-two thousand, two hundred eleven".