11144021 has 12 divisors (see below), whose sum is σ = 13017888. Its totient is φ = 9511992.

The previous prime is 11144011. The next prime is 11144041. The reversal of 11144021 is 12044111.

It is not a de Polignac number, because 11144021 - 2¹⁰ = 11142997 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 = 11143987 and 11144005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144011) 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 11 ways as a sum of consecutive naturals, for example, 22640 + ... + 23126.

It is an arithmetic number, because the mean of its divisors is an integer number (1084824).

Almost surely, 2^11144021 is an apocalyptic number.

It is an amenable number.

11144021 is a deficient number, since it is larger than the sum of its proper divisors (1873867).

11144021 is an equidigital number, since it uses as much as digits as its factorization.

11144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 961 counting only the distinct ones).

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

The square root of 11144021 is about 3338.2661667399. The cubic root of 11144021 is about 223.3644091803.

Adding to 11144021 its reverse (12044111), we get a palindrome (23188132).

The spelling of 11144021 in words is "eleven million, one hundred forty-four thousand, twenty-one".