12195597 has 4 divisors (see below), whose sum is σ = 16260800. Its totient is φ = 8130396.

The previous prime is 12195593. The next prime is 12195619. The reversal of 12195597 is 79559121.

12195597 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 12195597 - 2² = 12195593 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 (12195593) 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, 2032597 + ... + 2032602.

It is an arithmetic number, because the mean of its divisors is an integer number (4065200).

Almost surely, 2^12195597 is an apocalyptic number.

It is an amenable number.

12195597 is a deficient number, since it is larger than the sum of its proper divisors (4065203).

12195597 is an equidigital number, since it uses as much as digits as its factorization.

12195597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065202.

The product of its digits is 28350, while the sum is 39.

The square root of 12195597 is about 3492.2194948199. The cubic root of 12195597 is about 230.1800543457.

The spelling of 12195597 in words is "twelve million, one hundred ninety-five thousand, five hundred ninety-seven".