12281193 has 8 divisors (see below), whose sum is σ = 18194400. Its totient is φ = 8187444.

The previous prime is 12281183. The next prime is 12281207. The reversal of 12281193 is 39118221.

It is not a de Polignac number, because 12281193 - 2⁵ = 12281161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 454859 = 12281193 / (1 + 2 + 2 + 8 + 1 + 1 + 9 + 3).

It is not an unprimeable number, because it can be changed into a prime (12281173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227403 + ... + 227456.

It is an arithmetic number, because the mean of its divisors is an integer number (2274300).

Almost surely, 2^12281193 is an apocalyptic number.

It is an amenable number.

12281193 is a deficient number, since it is larger than the sum of its proper divisors (5913207).

12281193 is an equidigital number, since it uses as much as digits as its factorization.

12281193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454868 (or 454862 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 12281193 is about 3504.4533097189. The cubic root of 12281193 is about 230.7173131668.

The spelling of 12281193 in words is "twelve million, two hundred eighty-one thousand, one hundred ninety-three".