206222285 has 4 divisors (see below), whose sum is σ = 247466748. Its totient is φ = 164977824.

The previous prime is 206222279. The next prime is 206222293. The reversal of 206222285 is 582222602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52809289 + 153412996 = 7267^2 + 12386^2 .

It is a cyclic number.

It is not a de Polignac number, because 206222285 - 2¹⁰ = 206221261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20622224 + ... + 20622233.

It is an arithmetic number, because the mean of its divisors is an integer number (61866687).

Almost surely, 2^206222285 is an apocalyptic number.

It is an amenable number.

206222285 is a deficient number, since it is larger than the sum of its proper divisors (41244463).

206222285 is an equidigital number, since it uses as much as digits as its factorization.

206222285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41244462.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 206222285 is about 14360.4416714807. The cubic root of 206222285 is about 590.8064095099.

Adding to 206222285 its reverse (582222602), we get a palindrome (788444887).

The spelling of 206222285 in words is "two hundred six million, two hundred twenty-two thousand, two hundred eighty-five".