12158881 has 8 divisors (see below), whose sum is σ = 14500224. Its totient is φ = 9968640.

The previous prime is 12158873. The next prime is 12158891. The reversal of 12158881 is 18885121.

12158881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12158881 - 2³ = 12158873 is a prime.

It is a super-2 number, since 2×12158881² = 295676774344322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12158891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37600 + ... + 37921.

It is an arithmetic number, because the mean of its divisors is an integer number (1812528).

Almost surely, 2^12158881 is an apocalyptic number.

It is an amenable number.

12158881 is a deficient number, since it is larger than the sum of its proper divisors (2341343).

12158881 is an equidigital number, since it uses as much as digits as its factorization.

12158881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75551.

The product of its digits is 5120, while the sum is 34.

The square root of 12158881 is about 3486.9587035123. The cubic root of 12158881 is about 229.9488291960.

The spelling of 12158881 in words is "twelve million, one hundred fifty-eight thousand, eight hundred eighty-one".