2211166 has 4 divisors (see below), whose sum is σ = 3316752. Its totient is φ = 1105582.

The previous prime is 2211161. The next prime is 2211179. The reversal of 2211166 is 6611122.

It is a semiprime because it is the product of two primes.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211161) 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 as a sum of consecutive naturals, namely, 552790 + ... + 552793.

It is an arithmetic number, because the mean of its divisors is an integer number (829188).

2^2211166 is an apocalyptic number.

2211166 is a deficient number, since it is larger than the sum of its proper divisors (1105586).

2211166 is a wasteful number, since it uses less digits than its factorization.

2211166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105585.

The product of its digits is 144, while the sum is 19.

The square root of 2211166 is about 1486.9989912572. The cubic root of 2211166 is about 130.2788098953.

Adding to 2211166 its reverse (6611122), we get a palindrome (8822288).

It can be divided in two parts, 221116 and 6, that added together give a palindrome (221122).

The spelling of 2211166 in words is "two million, two hundred eleven thousand, one hundred sixty-six".