11216216 has 24 divisors (see below), whose sum is σ = 23118060. Its totient is φ = 5097840.

The previous prime is 11216201. The next prime is 11216239. The reversal of 11216216 is 61261211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4826 + ... + 6761.

Almost surely, 2^11216216 is an apocalyptic number.

It is an amenable number.

11216216 is an abundant number, since it is smaller than the sum of its proper divisors (11901844).

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

11216216 is a wasteful number, since it uses less digits than its factorization.

11216216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615 (or 11600 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 11216216 is about 3349.0619582205. The cubic root of 11216216 is about 223.8457164633.

Adding to 11216216 its reverse (61261211), we get a palindrome (72477427).

It can be divided in two parts, 1121 and 6216, that added together give a palindrome (7337).

The spelling of 11216216 in words is "eleven million, two hundred sixteen thousand, two hundred sixteen".