2011100011111 has 4 divisors (see below), whose sum is σ = 2011162837032. Its totient is φ = 2011037185192.

The previous prime is 2011100011093. The next prime is 2011100011121. The reversal of 2011100011111 is 1111100011102.

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 2011100011111 - 2⁵ = 2011100011079 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 (2011100011121) 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, 31364920 + ... + 31428973.

It is an arithmetic number, because the mean of its divisors is an integer number (502790709258).

Almost surely, 2^{2011100011111} is an apocalyptic number.

2011100011111 is a deficient number, since it is larger than the sum of its proper divisors (62825921).

2011100011111 is an equidigital number, since it uses as much as digits as its factorization.

2011100011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62825920.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 2011100011111 its reverse (1111100011102), we get a palindrome (3122200022213).

Subtracting from 2011100011111 its reverse (1111100011102), we obtain a palindrome (900000000009).

The spelling of 2011100011111 in words is "two trillion, eleven billion, one hundred million, eleven thousand, one hundred eleven".