12120195 has 48 divisors (see below), whose sum is σ = 21807360. Its totient is φ = 5721408.

The previous prime is 12120181. The next prime is 12120223. The reversal of 12120195 is 59102121.

12120195 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12120195 - 2⁴ = 12120179 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 281844 + ... + 281886.

It is an arithmetic number, because the mean of its divisors is an integer number (454320).

Almost surely, 2^12120195 is an apocalyptic number.

12120195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12120195 is a deficient number, since it is larger than the sum of its proper divisors (9687165).

12120195 is a wasteful number, since it uses less digits than its factorization.

12120195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 12120195 is about 3481.4070431364. The cubic root of 12120195 is about 229.7046934697.

The spelling of 12120195 in words is "twelve million, one hundred twenty thousand, one hundred ninety-five".