2011112111 has 8 divisors (see below), whose sum is σ = 2132955744. Its totient is φ = 1892135520.

The previous prime is 2011112099. The next prime is 2011112137. The reversal of 2011112111 is 1112111102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011112111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011112092 and 2011112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011112141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715316 + ... + 718121.

It is an arithmetic number, because the mean of its divisors is an integer number (266619468).

Almost surely, 2^2011112111 is an apocalyptic number.

2011112111 is a deficient number, since it is larger than the sum of its proper divisors (121843633).

2011112111 is a wasteful number, since it uses less digits than its factorization.

2011112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433521.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 2011112111 is about 44845.4246384177. The cubic root of 2011112111 is about 1262.2501387832.

Adding to 2011112111 its reverse (1112111102), we get a palindrome (3123223213).

The spelling of 2011112111 in words is "two billion, eleven million, one hundred twelve thousand, one hundred eleven".