12159081 has 12 divisors (see below), whose sum is σ = 19159920. Its totient is φ = 7369080.

The previous prime is 12159079. The next prime is 12159109. The reversal of 12159081 is 18095121.

12159081 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 12159081 - 2¹ = 12159079 is a prime.

It is a super-2 number, since 2×12159081² = 295686501529122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12159011) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 61311 + ... + 61508.

It is an arithmetic number, because the mean of its divisors is an integer number (1596660).

Almost surely, 2^12159081 is an apocalyptic number.

12159081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12159081 is a deficient number, since it is larger than the sum of its proper divisors (7000839).

12159081 is a wasteful number, since it uses less digits than its factorization.

12159081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122836 (or 122833 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12159081 is about 3486.9873816806. The cubic root of 12159081 is about 229.9500899895.

It can be divided in two parts, 1215 and 9081, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 12159081 in words is "twelve million, one hundred fifty-nine thousand, eighty-one".