201000099 has 4 divisors (see below), whose sum is σ = 268000136. Its totient is φ = 134000064.

The previous prime is 201000091. The next prime is 201000109. The reversal of 201000099 is 990000102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201000099 - 2³ = 201000091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33500014 + ... + 33500019.

It is an arithmetic number, because the mean of its divisors is an integer number (67000034).

Almost surely, 2^201000099 is an apocalyptic number.

201000099 is a deficient number, since it is larger than the sum of its proper divisors (67000037).

201000099 is an equidigital number, since it uses as much as digits as its factorization.

201000099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67000036.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 201000099 is about 14177.4503702182. The cubic root of 201000099 is about 585.7766964373.

The spelling of 201000099 in words is "two hundred one million, ninety-nine", and thus it is an aban number.