11121424 has 10 divisors (see below), whose sum is σ = 21547790. Its totient is φ = 5560704.

The previous prime is 11121421. The next prime is 11121431. The reversal of 11121424 is 42412111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7661824 + 3459600 = 2768^2 + 1860^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 695089 = 11121424 / (1 + 1 + 1 + 2 + 1 + 4 + 2 + 4).

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

It is a junction number, because it is equal to n+sod(n) for n = 11121398 and 11121407.

It is not an unprimeable number, because it can be changed into a prime (11121421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347529 + ... + 347560.

It is an arithmetic number, because the mean of its divisors is an integer number (2154779).

Almost surely, 2^11121424 is an apocalyptic number.

It is an amenable number.

11121424 is a deficient number, since it is larger than the sum of its proper divisors (10426366).

11121424 is an equidigital number, since it uses as much as digits as its factorization.

11121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695097 (or 695091 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 11121424 is about 3334.8799078827. The cubic root of 11121424 is about 223.2133332220.

Adding to 11121424 its reverse (42412111), we get a palindrome (53533535).

The spelling of 11121424 in words is "eleven million, one hundred twenty-one thousand, four hundred twenty-four".