11121144 has 32 divisors (see below), whose sum is σ = 29013120. Its totient is φ = 3545696.

The previous prime is 11121139. The next prime is 11121163. The reversal of 11121144 is 44112111.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9522 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (906660).

Almost surely, 2^11121144 is an apocalyptic number.

It is an amenable number.

11121144 is an abundant number, since it is smaller than the sum of its proper divisors (17891976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121144 is a wasteful number, since it uses less digits than its factorization.

11121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20179 (or 20175 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 11121144 is about 3334.8379270963. The cubic root of 11121144 is about 223.2114599530.

Adding to 11121144 its reverse (44112111), we get a palindrome (55233255).

The spelling of 11121144 in words is "eleven million, one hundred twenty-one thousand, one hundred forty-four".