11124221 has 4 divisors (see below), whose sum is σ = 11137344. Its totient is φ = 11111100.

The previous prime is 11124193. The next prime is 11124259. The reversal of 11124221 is 12242111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11124221 - 2²² = 6929917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11124196 and 11124205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11124121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5195 + ... + 7016.

It is an arithmetic number, because the mean of its divisors is an integer number (2784336).

Almost surely, 2^11124221 is an apocalyptic number.

It is an amenable number.

11124221 is a deficient number, since it is larger than the sum of its proper divisors (13123).

11124221 is an equidigital number, since it uses as much as digits as its factorization.

11124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122.

The product of its digits is 32, while the sum is 14.

The square root of 11124221 is about 3335.2992369501. The cubic root of 11124221 is about 223.2320441161.

Adding to 11124221 its reverse (12242111), we get a palindrome (23366332).

The spelling of 11124221 in words is "eleven million, one hundred twenty-four thousand, two hundred twenty-one".