12195127 has 4 divisors (see below), whose sum is σ = 13937296. Its totient is φ = 10452960.

The previous prime is 12195077. The next prime is 12195149. The reversal of 12195127 is 72159121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12195127 - 2¹⁹ = 11670839 is a prime.

It is a super-2 number, since 2×12195127² = 297442245092258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12195095 and 12195104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195427) 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 3 ways as a sum of consecutive naturals, for example, 871074 + ... + 871087.

It is an arithmetic number, because the mean of its divisors is an integer number (3484324).

Almost surely, 2^12195127 is an apocalyptic number.

12195127 is a deficient number, since it is larger than the sum of its proper divisors (1742169).

12195127 is an equidigital number, since it uses as much as digits as its factorization.

12195127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742168.

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

The square root of 12195127 is about 3492.1522017232. The cubic root of 12195127 is about 230.1770973765.

The spelling of 12195127 in words is "twelve million, one hundred ninety-five thousand, one hundred twenty-seven".