2011001099 has 4 divisors (see below), whose sum is σ = 2018826264. Its totient is φ = 2003175936.

The previous prime is 2011001071. The next prime is 2011001131. The reversal of 2011001099 is 9901001102.

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 2011001099 - 2²⁴ = 1994223883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011001039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3912197 + ... + 3912710.

It is an arithmetic number, because the mean of its divisors is an integer number (504706566).

Almost surely, 2^2011001099 is an apocalyptic number.

2011001099 is a deficient number, since it is larger than the sum of its proper divisors (7825165).

2011001099 is an equidigital number, since it uses as much as digits as its factorization.

2011001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7825164.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 2011001099 is about 44844.1869030982. The cubic root of 2011001099 is about 1262.2269132438.

The spelling of 2011001099 in words is "two billion, eleven million, one thousand, ninety-nine".