12111243 has 8 divisors (see below), whose sum is σ = 16172688. Its totient is φ = 8061984.

The previous prime is 12111221. The next prime is 12111263. The reversal of 12111243 is 34211121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12111243 - 2²¹ = 10014091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396 + ... + 4937.

It is an arithmetic number, because the mean of its divisors is an integer number (2021586).

Almost surely, 2^12111243 is an apocalyptic number.

12111243 is a deficient number, since it is larger than the sum of its proper divisors (4061445).

12111243 is an equidigital number, since it uses as much as digits as its factorization.

12111243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093.

The product of its digits is 48, while the sum is 15.

The square root of 12111243 is about 3480.1211185819. The cubic root of 12111243 is about 229.6481260936.

Adding to 12111243 its reverse (34211121), we get a palindrome (46322364).

The spelling of 12111243 in words is "twelve million, one hundred eleven thousand, two hundred forty-three".