12191324 has 12 divisors (see below), whose sum is σ = 21413784. Its totient is φ = 6073104.

The previous prime is 12191299. The next prime is 12191327. The reversal of 12191324 is 42319121.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12191324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191327) 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 3 ways as a sum of consecutive naturals, for example, 4394 + ... + 6609.

It is an arithmetic number, because the mean of its divisors is an integer number (1784482).

Almost surely, 2^12191324 is an apocalyptic number.

It is an amenable number.

12191324 is a deficient number, since it is larger than the sum of its proper divisors (9222460).

12191324 is a wasteful number, since it uses less digits than its factorization.

12191324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11284 (or 11282 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

The square root of 12191324 is about 3491.6076526437. The cubic root of 12191324 is about 230.1531682964.

The spelling of 12191324 in words is "twelve million, one hundred ninety-one thousand, three hundred twenty-four".