12282091 has 4 divisors (see below), whose sum is σ = 12430152. Its totient is φ = 12134032.

The previous prime is 12282079. The next prime is 12282103. The reversal of 12282091 is 19028221.

12282091 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12282079) and next prime (12282103).

It is a cyclic number.

It is not a de Polignac number, because 12282091 - 2⁷ = 12281963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12282191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73906 + ... + 74071.

It is an arithmetic number, because the mean of its divisors is an integer number (3107538).

Almost surely, 2^12282091 is an apocalyptic number.

12282091 is a deficient number, since it is larger than the sum of its proper divisors (148061).

12282091 is an equidigital number, since it uses as much as digits as its factorization.

12282091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148060.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12282091 is about 3504.5814300712. The cubic root of 12282091 is about 230.7229363745.

The spelling of 12282091 in words is "twelve million, two hundred eighty-two thousand, ninety-one".