2212216 has 8 divisors (see below), whose sum is σ = 4147920. Its totient is φ = 1106104.

The previous prime is 2212187. The next prime is 2212219. The reversal of 2212216 is 6122122.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2212216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138256 + ... + 138271.

It is an arithmetic number, because the mean of its divisors is an integer number (518490).

2^2212216 is an apocalyptic number.

It is an amenable number.

2212216 is a deficient number, since it is larger than the sum of its proper divisors (1935704).

2212216 is a wasteful number, since it uses less digits than its factorization.

2212216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276533 (or 276529 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 2212216 is about 1487.3520094450. The cubic root of 2212216 is about 130.2994281428.

Adding to 2212216 its reverse (6122122), we get a palindrome (8334338).

The spelling of 2212216 in words is "two million, two hundred twelve thousand, two hundred sixteen".