11216471 has 4 divisors (see below), whose sum is σ = 12818832. Its totient is φ = 9614112.

The previous prime is 11216467. The next prime is 11216473. The reversal of 11216471 is 17461211.

It is a happy number.

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 11216471 - 2² = 11216467 is a prime.

It is a super-3 number, since 3×11216471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11216473) 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 3 ways as a sum of consecutive naturals, for example, 801170 + ... + 801183.

It is an arithmetic number, because the mean of its divisors is an integer number (3204708).

Almost surely, 2^11216471 is an apocalyptic number.

11216471 is a deficient number, since it is larger than the sum of its proper divisors (1602361).

11216471 is an equidigital number, since it uses as much as digits as its factorization.

11216471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602360.

The product of its digits is 336, while the sum is 23.

The square root of 11216471 is about 3349.1000283658. The cubic root of 11216471 is about 223.8474128234.

Adding to 11216471 its reverse (17461211), we get a palindrome (28677682).

The spelling of 11216471 in words is "eleven million, two hundred sixteen thousand, four hundred seventy-one".