12195197 has 4 divisors (see below), whose sum is σ = 13937376. Its totient is φ = 10453020.

The previous prime is 12195193. The next prime is 12195199. The reversal of 12195197 is 79159121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79159121 = 277 ⋅285773.

It is a cyclic number.

It is not a de Polignac number, because 12195197 - 2² = 12195193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195193) 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, 871079 + ... + 871092.

It is an arithmetic number, because the mean of its divisors is an integer number (3484344).

Almost surely, 2^12195197 is an apocalyptic number.

It is an amenable number.

12195197 is a deficient number, since it is larger than the sum of its proper divisors (1742179).

12195197 is an equidigital number, since it uses as much as digits as its factorization.

12195197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742178.

The product of its digits is 5670, while the sum is 35.

The square root of 12195197 is about 3492.1622241815. The cubic root of 12195197 is about 230.1775377809.

The spelling of 12195197 in words is "twelve million, one hundred ninety-five thousand, one hundred ninety-seven".