12191192 has 16 divisors (see below), whose sum is σ = 24617040. Its totient is φ = 5626656.

The previous prime is 12191191. The next prime is 12191203. The reversal of 12191192 is 29119121.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191191) 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, 58508 + ... + 58715.

It is an arithmetic number, because the mean of its divisors is an integer number (1538565).

Almost surely, 2^12191192 is an apocalyptic number.

It is an amenable number.

12191192 is an abundant number, since it is smaller than the sum of its proper divisors (12425848).

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

12191192 is a wasteful number, since it uses less digits than its factorization.

12191192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117242 (or 117238 counting only the distinct ones).

The product of its digits is 324, while the sum is 26.

The square root of 12191192 is about 3491.5887501251. The cubic root of 12191192 is about 230.1523376421.

It can be divided in two parts, 1219119 and 2, that added together give a palindrome (1219121).

The spelling of 12191192 in words is "twelve million, one hundred ninety-one thousand, one hundred ninety-two".