2001001099 has 8 divisors (see below), whose sum is σ = 2119199328. Its totient is φ = 1882857600.

The previous prime is 2001001097. The next prime is 2001001103. The reversal of 2001001099 is 9901001002.

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 2001001099 - 2¹ = 2001001097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001001091) 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 7 ways as a sum of consecutive naturals, for example, 79969 + ... + 101965.

It is an arithmetic number, because the mean of its divisors is an integer number (264899916).

Almost surely, 2^2001001099 is an apocalyptic number.

2001001099 is a deficient number, since it is larger than the sum of its proper divisors (118198229).

2001001099 is a wasteful number, since it uses less digits than its factorization.

2001001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27365.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 2001001099 is about 44732.5507768113. The cubic root of 2001001099 is about 1260.1312324470.

The spelling of 2001001099 in words is "two billion, one million, one thousand, ninety-nine".