11216915 has 4 divisors (see below), whose sum is σ = 13460304. Its totient is φ = 8973528.

The previous prime is 11216911. The next prime is 11216927. The reversal of 11216915 is 51961211.

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 11216915 - 2² = 11216911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11216911) 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, 1121687 + ... + 1121696.

It is an arithmetic number, because the mean of its divisors is an integer number (3365076).

Almost surely, 2^11216915 is an apocalyptic number.

11216915 is a deficient number, since it is larger than the sum of its proper divisors (2243389).

11216915 is an equidigital number, since it uses as much as digits as its factorization.

11216915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243388.

The product of its digits is 540, while the sum is 26.

The square root of 11216915 is about 3349.1663141743. The cubic root of 11216915 is about 223.8503664244.

The spelling of 11216915 in words is "eleven million, two hundred sixteen thousand, nine hundred fifteen".