2216111 has 4 divisors (see below), whose sum is σ = 2224992. Its totient is φ = 2207232.

The previous prime is 2216101. The next prime is 2216113. The reversal of 2216111 is 1116122.

2216111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2216111 - 2⁶ = 2216047 is a prime.

It is a super-2 number, since 2×2216111² = 9822295928642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216113) 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 in 3 ways as a sum of consecutive naturals, for example, 4055 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (556248).

2^2216111 is an apocalyptic number.

2216111 is a deficient number, since it is larger than the sum of its proper divisors (8881).

2216111 is an equidigital number, since it uses as much as digits as its factorization.

2216111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880.

The product of its digits is 24, while the sum is 14.

The square root of 2216111 is about 1488.6608075717. The cubic root of 2216111 is about 130.3758550840.

It can be divided in two parts, 221 and 6111, that multiplied together give a palindrome (1350531).

The spelling of 2216111 in words is "two million, two hundred sixteen thousand, one hundred eleven".