13111224 has 48 divisors (see below), whose sum is σ = 38133000. Its totient is φ = 3745728.

The previous prime is 13111211. The next prime is 13111229. The reversal of 13111224 is 42211131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111229) 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, 4399 + ... + 6750.

Almost surely, 2^13111224 is an apocalyptic number.

13111224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13111224 is an abundant number, since it is smaller than the sum of its proper divisors (25021776).

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

13111224 is a wasteful number, since it uses less digits than its factorization.

13111224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11172 (or 11161 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 13111224 is about 3620.9424187634. The cubic root of 13111224 is about 235.8021419318.

Adding to 13111224 its reverse (42211131), we get a palindrome (55322355).

The spelling of 13111224 in words is "thirteen million, one hundred eleven thousand, two hundred twenty-four".