100001099 has 4 divisors (see below), whose sum is σ = 109092120. Its totient is φ = 90910080.

The previous prime is 100001087. The next prime is 100001107. The reversal of 100001099 is 990100001.

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

It is a cyclic number.

It is not a de Polignac number, because 100001099 - 2²⁰ = 98952523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100001099.

It is not an unprimeable number, because it can be changed into a prime (100001029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545494 + ... + 4545515.

It is an arithmetic number, because the mean of its divisors is an integer number (27273030).

Almost surely, 2^100001099 is an apocalyptic number.

100001099 is a deficient number, since it is larger than the sum of its proper divisors (9091021).

100001099 is an equidigital number, since it uses as much as digits as its factorization.

100001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9091020.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 100001099 is about 10000.0549498490. The cubic root of 100001099 is about 464.1605837238.

The spelling of 100001099 in words is "one hundred million, one thousand, ninety-nine".