12195271 has 8 divisors (see below), whose sum is σ = 13356288. Its totient is φ = 11043000.

The previous prime is 12195269. The next prime is 12195301. The reversal of 12195271 is 17259121.

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

It is a cyclic number.

It is not a de Polignac number, because 12195271 - 2¹ = 12195269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936 + ... + 5026.

It is an arithmetic number, because the mean of its divisors is an integer number (1669536).

Almost surely, 2^12195271 is an apocalyptic number.

12195271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12195271 is a deficient number, since it is larger than the sum of its proper divisors (1161017).

12195271 is a wasteful number, since it uses less digits than its factorization.

12195271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373.

The product of its digits is 1260, while the sum is 28.

The square root of 12195271 is about 3492.1728193204. The cubic root of 12195271 is about 230.1780033496.

The spelling of 12195271 in words is "twelve million, one hundred ninety-five thousand, two hundred seventy-one".