206141221 has 32 divisors (see below), whose sum is σ = 251475840. Its totient is φ = 166483200.

The previous prime is 206141209. The next prime is 206141231. The reversal of 206141221 is 122141602.

206141221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206141221 - 2⁷ = 206141093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206141231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446931 + ... + 447391.

It is an arithmetic number, because the mean of its divisors is an integer number (7858620).

Almost surely, 2^206141221 is an apocalyptic number.

It is an amenable number.

206141221 is a deficient number, since it is larger than the sum of its proper divisors (45334619).

206141221 is a wasteful number, since it uses less digits than its factorization.

206141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 206141221 is about 14357.6189181911. The cubic root of 206141221 is about 590.7289859220.

Adding to 206141221 its reverse (122141602), we get a palindrome (328282823).

The spelling of 206141221 in words is "two hundred six million, one hundred forty-one thousand, two hundred twenty-one".