2011044099991 has 4 divisors (see below), whose sum is σ = 2065396643272. Its totient is φ = 1956691556712.

The previous prime is 2011044099943. The next prime is 2011044100031. The reversal of 2011044099991 is 1999904401102.

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 2011044099991 - 2¹¹ = 2011044097943 is a prime.

It is a super-2 number, since 2×2011044099991² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011044099941) 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, 27176271585 + ... + 27176271658.

It is an arithmetic number, because the mean of its divisors is an integer number (516349160818).

Almost surely, 2^{2011044099991} is an apocalyptic number.

2011044099991 is a deficient number, since it is larger than the sum of its proper divisors (54352543281).

2011044099991 is an equidigital number, since it uses as much as digits as its factorization.

2011044099991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54352543280.

The product of its (nonzero) digits is 209952, while the sum is 49.

The spelling of 2011044099991 in words is "two trillion, eleven billion, forty-four million, ninety-nine thousand, nine hundred ninety-one".