11215116 has 72 divisors (see below), whose sum is σ = 31309824. Its totient is φ = 3356640.

The previous prime is 11215097. The next prime is 11215117. The reversal of 11215116 is 61151211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11215117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50181 + ... + 50403.

Almost surely, 2^11215116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11215116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15654912).

11215116 is an abundant number, since it is smaller than the sum of its proper divisors (20094708).

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

11215116 is a wasteful number, since it uses less digits than its factorization.

11215116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 366 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 11215116 is about 3348.8977291043. The cubic root of 11215116 is about 223.8383985366.

Adding to 11215116 its reverse (61151211), we get a palindrome (72366327).

The spelling of 11215116 in words is "eleven million, two hundred fifteen thousand, one hundred sixteen".