11212216 has 24 divisors (see below), whose sum is σ = 21395880. Its totient is φ = 5508288.

The previous prime is 11212171. The next prime is 11212219. The reversal of 11212216 is 61221211.

11212216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11212216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42501 + ... + 42763.

It is an arithmetic number, because the mean of its divisors is an integer number (891495).

Almost surely, 2^11212216 is an apocalyptic number.

It is an amenable number.

11212216 is a deficient number, since it is larger than the sum of its proper divisors (10183664).

11212216 is an equidigital number, since it uses as much as digits as its factorization.

11212216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 338 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 11212216 is about 3348.4647228245. The cubic root of 11212216 is about 223.8191035270.

Adding to 11212216 its reverse (61221211), we get a palindrome (72433427).

The spelling of 11212216 in words is "eleven million, two hundred twelve thousand, two hundred sixteen".