12291113 has 4 divisors (see below), whose sum is σ = 12305040. Its totient is φ = 12277188.

The previous prime is 12291109. The next prime is 12291121. The reversal of 12291113 is 31119221.

12291113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31119221 = 7 ⋅4445603.

It is a cyclic number.

It is not a de Polignac number, because 12291113 - 2² = 12291109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12291313) 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, 5543 + ... + 7436.

It is an arithmetic number, because the mean of its divisors is an integer number (3076260).

Almost surely, 2^12291113 is an apocalyptic number.

It is an amenable number.

12291113 is a deficient number, since it is larger than the sum of its proper divisors (13927).

12291113 is an equidigital number, since it uses as much as digits as its factorization.

12291113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13926.

The product of its digits is 108, while the sum is 20.

The square root of 12291113 is about 3505.8683660400. The cubic root of 12291113 is about 230.7794162484.

The spelling of 12291113 in words is "twelve million, two hundred ninety-one thousand, one hundred thirteen".