11321217 has 12 divisors (see below), whose sum is σ = 16388944. Its totient is φ = 7530840.

The previous prime is 11321203. The next prime is 11321243. The reversal of 11321217 is 71212311.

It is a happy number.

It is not a de Polignac number, because 11321217 - 2⁶ = 11321153 is a prime.

It is a super-2 number, since 2×11321217² = 256339908722178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321217.

It is not an unprimeable number, because it can be changed into a prime (11321257) 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, 4038 + ... + 6240.

Almost surely, 2^11321217 is an apocalyptic number.

It is an amenable number.

11321217 is a deficient number, since it is larger than the sum of its proper divisors (5067727).

11321217 is a wasteful number, since it uses less digits than its factorization.

11321217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780 (or 2777 counting only the distinct ones).

The product of its digits is 84, while the sum is 18.

The square root of 11321217 is about 3364.7016212437. The cubic root of 11321217 is about 224.5420611896.

Adding to 11321217 its reverse (71212311), we get a palindrome (82533528).

The spelling of 11321217 in words is "eleven million, three hundred twenty-one thousand, two hundred seventeen".