2188111 has 2 divisors, whose sum is σ = 2188112. Its totient is φ = 2188110.

The previous prime is 2188099. The next prime is 2188117. The reversal of 2188111 is 1118812.

2188111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2188111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2188117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094055 + 1094056.

It is an arithmetic number, because the mean of its divisors is an integer number (1094056).

2^2188111 is an apocalyptic number.

2188111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188111 is an equidigital number, since it uses as much as digits as its factorization.

2188111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 22.

The square root of 2188111 is about 1479.2264870533. The cubic root of 2188111 is about 129.8244375694.

It can be divided in two parts, 218811 and 1, that added together give a palindrome (218812).

The spelling of 2188111 in words is "two million, one hundred eighty-eight thousand, one hundred eleven".