12191194 has 8 divisors (see below), whose sum is σ = 18917460. Its totient is φ = 5885376.

The previous prime is 12191191. The next prime is 12191203. The reversal of 12191194 is 49119121.

12191194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11812969 + 378225 = 3437^2 + 615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12191194² = 297250422291272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12191191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105039 + ... + 105154.

Almost surely, 2^12191194 is an apocalyptic number.

12191194 is a deficient number, since it is larger than the sum of its proper divisors (6726266).

12191194 is a wasteful number, since it uses less digits than its factorization.

12191194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210224.

The product of its digits is 648, while the sum is 28.

The square root of 12191194 is about 3491.5890365276. The cubic root of 12191194 is about 230.1523502278.

The spelling of 12191194 in words is "twelve million, one hundred ninety-one thousand, one hundred ninety-four".