206121158 has 36 divisors (see below), whose sum is σ = 348266940. Its totient is φ = 91222272.

The previous prime is 206121151. The next prime is 206121169. The reversal of 206121158 is 851121602.

206121158 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206121151) 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 17 ways as a sum of consecutive naturals, for example, 1504466 + ... + 1504602.

Almost surely, 2^206121158 is an apocalyptic number.

206121158 is a deficient number, since it is larger than the sum of its proper divisors (142145782).

206121158 is a wasteful number, since it uses less digits than its factorization.

206121158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 206121158 is about 14356.9202129147. The cubic root of 206121158 is about 590.7098207754.

The spelling of 206121158 in words is "two hundred six million, one hundred twenty-one thousand, one hundred fifty-eight".