2218111 has 8 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 1874040.

The previous prime is 2218093. The next prime is 2218121. The reversal of 2218111 is 1118122.

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

It is not a de Polignac number, because 2218111 - 2¹⁵ = 2185343 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 (2218121) 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 7 ways as a sum of consecutive naturals, for example, 1735 + ... + 2728.

It is an arithmetic number, because the mean of its divisors is an integer number (321408).

2^2218111 is an apocalyptic number.

2218111 is a deficient number, since it is larger than the sum of its proper divisors (353153).

2218111 is an equidigital number, since it uses as much as digits as its factorization.

2218111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541.

The product of its digits is 32, while the sum is 16.

The square root of 2218111 is about 1489.3324007756. The cubic root of 2218111 is about 130.4150639064.

The spelling of 2218111 in words is "two million, two hundred eighteen thousand, one hundred eleven".