12091103 has 2 divisors, whose sum is σ = 12091104. Its totient is φ = 12091102.

The previous prime is 12091081. The next prime is 12091109. The reversal of 12091103 is 30119021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30119021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12091103 - 2¹⁰ = 12090079 is a prime.

It is a plaindrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12091109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045551 + 6045552.

It is an arithmetic number, because the mean of its divisors is an integer number (6045552).

Almost surely, 2^12091103 is an apocalyptic number.

12091103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12091103 is an equidigital number, since it uses as much as digits as its factorization.

12091103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 12091103 is about 3477.2263371831. The cubic root of 12091103 is about 229.5207601588.

The spelling of 12091103 in words is "twelve million, ninety-one thousand, one hundred three".