206100101 has 8 divisors (see below), whose sum is σ = 212311320. Its totient is φ = 199922688.

The previous prime is 206100047. The next prime is 206100113. The reversal of 206100101 is 101001602.

It can be written as a sum of positive squares in 4 ways, for example, as 93103201 + 112996900 = 9649^2 + 10630^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206100101 - 2²² = 201905797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206100131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205 + ... + 20733.

It is an arithmetic number, because the mean of its divisors is an integer number (26538915).

Almost surely, 2^206100101 is an apocalyptic number.

It is an amenable number.

206100101 is a deficient number, since it is larger than the sum of its proper divisors (6211219).

206100101 is a wasteful number, since it uses less digits than its factorization.

206100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16903.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 206100101 is about 14356.1868544541. The cubic root of 206100101 is about 590.6897047744.

Adding to 206100101 its reverse (101001602), we get a palindrome (307101703).

The spelling of 206100101 in words is "two hundred six million, one hundred thousand, one hundred one".