205221241 has 8 divisors (see below), whose sum is σ = 210218624. Its totient is φ = 200234160.

The previous prime is 205221227. The next prime is 205221253. The reversal of 205221241 is 142122502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205221241 - 2¹¹ = 205219193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205221281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50995 + ... + 54871.

It is an arithmetic number, because the mean of its divisors is an integer number (26277328).

Almost surely, 2^205221241 is an apocalyptic number.

It is an amenable number.

205221241 is a deficient number, since it is larger than the sum of its proper divisors (4997383).

205221241 is a wasteful number, since it uses less digits than its factorization.

205221241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 205221241 is about 14325.5450507127. The cubic root of 205221241 is about 589.8488945603.

Adding to 205221241 its reverse (142122502), we get a palindrome (347343743).

The spelling of 205221241 in words is "two hundred five million, two hundred twenty-one thousand, two hundred forty-one".