11216541 has 12 divisors (see below), whose sum is σ = 17397312. Its totient is φ = 6409368.

The previous prime is 11216521. The next prime is 11216563. The reversal of 11216541 is 14561211.

11216541 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11216541 - 2⁶ = 11216477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11216501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38005 + ... + 38298.

It is an arithmetic number, because the mean of its divisors is an integer number (1449776).

Almost surely, 2^11216541 is an apocalyptic number.

It is an amenable number.

11216541 is a deficient number, since it is larger than the sum of its proper divisors (6180771).

11216541 is an equidigital number, since it uses as much as digits as its factorization.

11216541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76320 (or 76313 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 11216541 is about 3349.1104789182. The cubic root of 11216541 is about 223.8478784864.

Adding to 11216541 its reverse (14561211), we get a palindrome (25777752).

It can be divided in two parts, 112 and 16541, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 11216541 in words is "eleven million, two hundred sixteen thousand, five hundred forty-one".