206105011 has 16 divisors (see below), whose sum is σ = 241781760. Its totient is φ = 172025280.

The previous prime is 206104999. The next prime is 206105021. The reversal of 206105011 is 110501602.

It is a happy number.

206105011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-206105011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206105021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67935 + ... + 70903.

It is an arithmetic number, because the mean of its divisors is an integer number (15111360).

Almost surely, 2^206105011 is an apocalyptic number.

206105011 is a deficient number, since it is larger than the sum of its proper divisors (35676749).

206105011 is a wasteful number, since it uses less digits than its factorization.

206105011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 206105011 is about 14356.3578598473. The cubic root of 206105011 is about 590.6943954779.

Adding to 206105011 its reverse (110501602), we get a palindrome (316606613).

The spelling of 206105011 in words is "two hundred six million, one hundred five thousand, eleven".