12199138 has 16 divisors (see below), whose sum is σ = 21340800. Its totient is φ = 5227908.

The previous prime is 12199133. The next prime is 12199147. The reversal of 12199138 is 83199121.

It is not an unprimeable number, because it can be changed into a prime (12199133) 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 7 ways as a sum of consecutive naturals, for example, 8206 + ... + 9577.

It is an arithmetic number, because the mean of its divisors is an integer number (1333800).

Almost surely, 2^12199138 is an apocalyptic number.

12199138 is a deficient number, since it is larger than the sum of its proper divisors (9141662).

12199138 is an equidigital number, since it uses as much as digits as its factorization.

12199138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17806 (or 17792 counting only the distinct ones).

The product of its digits is 3888, while the sum is 34.

The square root of 12199138 is about 3492.7264421938. The cubic root of 12199138 is about 230.2023298358.

The spelling of 12199138 in words is "twelve million, one hundred ninety-nine thousand, one hundred thirty-eight".