12108091 has 2 divisors, whose sum is σ = 12108092. Its totient is φ = 12108090.

The previous prime is 12108077. The next prime is 12108113. The reversal of 12108091 is 19080121.

12108091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12108113) can be obtained adding 12108091 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12108091 - 2¹¹ = 12106043 is a prime.

It is not a weakly prime, because it can be changed into another prime (12108391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6054045 + 6054046.

It is an arithmetic number, because the mean of its divisors is an integer number (6054046).

Almost surely, 2^12108091 is an apocalyptic number.

12108091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12108091 is an equidigital number, since it uses as much as digits as its factorization.

12108091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 12108091 is about 3479.6682313117. The cubic root of 12108091 is about 229.6282020803.

The spelling of 12108091 in words is "twelve million, one hundred eight thousand, ninety-one".