2011100999 has 8 divisors (see below), whose sum is σ = 2120107440. Its totient is φ = 1902410496.

The previous prime is 2011100989. The next prime is 2011101031. The reversal of 2011100999 is 9990011102.

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 2011100999 - 2¹² = 2011096903 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 (2011100909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65852 + ... + 91425.

It is an arithmetic number, because the mean of its divisors is an integer number (265013430).

Almost surely, 2^2011100999 is an apocalyptic number.

2011100999 is a deficient number, since it is larger than the sum of its proper divisors (109006441).

2011100999 is a wasteful number, since it uses less digits than its factorization.

2011100999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157969.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 2011100999 is about 44845.3007460091. The cubic root of 2011100999 is about 1262.2478140082.

The spelling of 2011100999 in words is "two billion, eleven million, one hundred thousand, nine hundred ninety-nine".