206060221 has 2 divisors, whose sum is σ = 206060222. Its totient is φ = 206060220.

The previous prime is 206060209. The next prime is 206060233. The reversal of 206060221 is 122060602.

206060221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (206060209) and next prime (206060233).

It can be written as a sum of positive squares in only one way, i.e., 146168100 + 59892121 = 12090^2 + 7739^2 .

It is a cyclic number.

It is not a de Polignac number, because 206060221 - 2⁹ = 206059709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206060291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103030110 + 103030111.

It is an arithmetic number, because the mean of its divisors is an integer number (103030111).

Almost surely, 2^206060221 is an apocalyptic number.

It is an amenable number.

206060221 is a deficient number, since it is larger than the sum of its proper divisors (1).

206060221 is an equidigital number, since it uses as much as digits as its factorization.

206060221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 206060221 is about 14354.7978390502. The cubic root of 206060221 is about 590.6516031838.

The spelling of 206060221 in words is "two hundred six million, sixty thousand, two hundred twenty-one".