206420222 has 16 divisors (see below), whose sum is σ = 328110912. Its totient is φ = 97059840.

The previous prime is 206420209. The next prime is 206420243. The reversal of 206420222 is 222024602.

206420222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 206420194 and 206420203.

It is a congruent number.

It is an unprimeable number.

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, 75947 + ... + 78617.

It is an arithmetic number, because the mean of its divisors is an integer number (20506932).

Almost surely, 2^206420222 is an apocalyptic number.

206420222 is a deficient number, since it is larger than the sum of its proper divisors (121690690).

206420222 is a wasteful number, since it uses less digits than its factorization.

206420222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 206420222 is about 14367.3317634138. The cubic root of 206420222 is about 590.9953723621.

Adding to 206420222 its reverse (222024602), we get a palindrome (428444824).

The spelling of 206420222 in words is "two hundred six million, four hundred twenty thousand, two hundred twenty-two".