2081111 has 4 divisors (see below), whose sum is σ = 2084952. Its totient is φ = 2077272.

The previous prime is 2081099. The next prime is 2081129. The reversal of 2081111 is 1111802.

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 2081111 - 2⁶ = 2081047 is a prime.

It is a Duffinian number.

2081111 is a modest number, since divided by 1111 gives 208 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (521238).

2^2081111 is an apocalyptic number.

2081111 is a deficient number, since it is larger than the sum of its proper divisors (3841).

2081111 is an equidigital number, since it uses as much as digits as its factorization.

2081111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 2081111 is about 1442.6056287149. The cubic root of 2081111 is about 127.6728093751.

Adding to 2081111 its reverse (1111802), we get a palindrome (3192913).

The spelling of 2081111 in words is "two million, eighty-one thousand, one hundred eleven".