11121216 has 28 divisors (see below), whose sum is σ = 29425392. Its totient is φ = 3707008.

The previous prime is 11121197. The next prime is 11121217. The reversal of 11121216 is 61212111.

It is a happy number.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11121195 and 11121204.

It is not an unprimeable number, because it can be changed into a prime (11121217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28770 + ... + 29153.

Almost surely, 2^11121216 is an apocalyptic number.

11121216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11121216 is an abundant number, since it is smaller than the sum of its proper divisors (18304176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121216 is an equidigital number, since it uses as much as digits as its factorization.

11121216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57938 (or 57928 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 11121216 is about 3334.8487222062. The cubic root of 11121216 is about 223.2119416537.

Adding to 11121216 its reverse (61212111), we get a palindrome (72333327).

The spelling of 11121216 in words is "eleven million, one hundred twenty-one thousand, two hundred sixteen".