2001091019111 has 4 divisors (see below), whose sum is σ = 2001124107000. Its totient is φ = 2001057931224.

The previous prime is 2001091019101. The next prime is 2001091019129. The reversal of 2001091019111 is 1119101901002.

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 2001091019111 - 2²⁶ = 2001023910247 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 (2001091019101) 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, 16453061 + ... + 16574238.

It is an arithmetic number, because the mean of its divisors is an integer number (500281026750).

Almost surely, 2^{2001091019111} is an apocalyptic number.

2001091019111 is a deficient number, since it is larger than the sum of its proper divisors (33087889).

2001091019111 is an equidigital number, since it uses as much as digits as its factorization.

2001091019111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33087888.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 2001091019111 in words is "two trillion, one billion, ninety-one million, nineteen thousand, one hundred eleven".