205211241 has 6 divisors (see below), whose sum is σ = 296416250. Its totient is φ = 136807488.

The previous prime is 205211239. The next prime is 205211291. The reversal of 205211241 is 142112502.

205211241 is a `hidden beast` number, since 20 + 521 + 124 + 1 = 666.

205211241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 192099600 + 13111641 = 13860^2 + 3621^2 .

It is not a de Polignac number, because 205211241 - 2¹ = 205211239 is a prime.

It is a super-2 number, since 2×205211241² = 84223306865520162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205211231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11400616 + ... + 11400633.

Almost surely, 2^205211241 is an apocalyptic number.

It is an amenable number.

205211241 is a deficient number, since it is larger than the sum of its proper divisors (91205009).

205211241 is a wasteful number, since it uses less digits than its factorization.

205211241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22801255 (or 22801252 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 205211241 is about 14325.1960196013. The cubic root of 205211241 is about 589.8393137054.

Adding to 205211241 its reverse (142112502), we get a palindrome (347323743).

The spelling of 205211241 in words is "two hundred five million, two hundred eleven thousand, two hundred forty-one".