11228321 has 8 divisors (see below), whose sum is σ = 12120360. Its totient is φ = 10340352.

The previous prime is 11228311. The next prime is 11228333. The reversal of 11228321 is 12382211.

It can be written as a sum of positive squares in 4 ways, for example, as 2608225 + 8620096 = 1615^2 + 2936^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11228321 - 2⁶ = 11228257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11228293 and 11228302.

It is not an unprimeable number, because it can be changed into a prime (11228311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7265 + ... + 8673.

It is an arithmetic number, because the mean of its divisors is an integer number (1515045).

Almost surely, 2^11228321 is an apocalyptic number.

It is an amenable number.

11228321 is a deficient number, since it is larger than the sum of its proper divisors (892039).

11228321 is a wasteful number, since it uses less digits than its factorization.

11228321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035.

The product of its digits is 192, while the sum is 20.

The square root of 11228321 is about 3350.8686933391. The cubic root of 11228321 is about 223.9262153348.

The spelling of 11228321 in words is "eleven million, two hundred twenty-eight thousand, three hundred twenty-one".