206112216 has 64 divisors (see below), whose sum is σ = 547430400. Its totient is φ = 64444928.

The previous prime is 206112197. The next prime is 206112217. The reversal of 206112216 is 612211602.

It is a junction number, because it is equal to n+sod(n) for n = 206112192 and 206112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206112217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155605 + ... + 156923.

It is an arithmetic number, because the mean of its divisors is an integer number (8553600).

Almost surely, 2^206112216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206112216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273715200).

206112216 is an abundant number, since it is smaller than the sum of its proper divisors (341318184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206112216 is a wasteful number, since it uses less digits than its factorization.

206112216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 206112216 is about 14356.6087917725. The cubic root of 206112216 is about 590.7012785445.

Adding to 206112216 its reverse (612211602), we get a palindrome (818323818).

The spelling of 206112216 in words is "two hundred six million, one hundred twelve thousand, two hundred sixteen".