11232221 has 32 divisors (see below), whose sum is σ = 15456000. Its totient is φ = 8043840.

The previous prime is 11232217. The next prime is 11232227. The reversal of 11232221 is 12223211.

It is a happy number.

11232221 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 11232221 - 2² = 11232217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11232196 and 11232205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11232227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48935 + ... + 49163.

It is an arithmetic number, because the mean of its divisors is an integer number (483000).

Almost surely, 2^11232221 is an apocalyptic number.

11232221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11232221 is a deficient number, since it is larger than the sum of its proper divisors (4223779).

11232221 is a wasteful number, since it uses less digits than its factorization.

11232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 260 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 11232221 is about 3351.4505814647. The cubic root of 11232221 is about 223.9521382117.

Adding to 11232221 its reverse (12223211), we get a palindrome (23455432).

It can be divided in two parts, 11 and 232221, that added together give a palindrome (232232).

The spelling of 11232221 in words is "eleven million, two hundred thirty-two thousand, two hundred twenty-one".