11133221 has 8 divisors (see below), whose sum is σ = 12784800. Its totient is φ = 9588240.

The previous prime is 11133217. The next prime is 11133229. The reversal of 11133221 is 12233111.

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 11133221 - 2² = 11133217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11133196 and 11133205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133229) 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, 26426 + ... + 26843.

It is an arithmetic number, because the mean of its divisors is an integer number (1598100).

Almost surely, 2^11133221 is an apocalyptic number.

11133221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11133221 is a deficient number, since it is larger than the sum of its proper divisors (1651579).

11133221 is a wasteful number, since it uses less digits than its factorization.

11133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53299.

The product of its digits is 36, while the sum is 14.

The square root of 11133221 is about 3336.6481684469. The cubic root of 11133221 is about 223.2922295088.

Adding to 11133221 its reverse (12233111), we get a palindrome (23366332).

It can be divided in two parts, 1113 and 3221, that added together give a palindrome (4334).

The spelling of 11133221 in words is "eleven million, one hundred thirty-three thousand, two hundred twenty-one".