12443111 has 8 divisors (see below), whose sum is σ = 12673584. Its totient is φ = 12214720.

The previous prime is 12443107. The next prime is 12443129. The reversal of 12443111 is 11134421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12443111 - 2² = 12443107 is a prime.

It is a super-2 number, since 2×12443111² = 309662022716642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12443111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15971 + ... + 16731.

It is an arithmetic number, because the mean of its divisors is an integer number (1584198).

Almost surely, 2^12443111 is an apocalyptic number.

12443111 is a deficient number, since it is larger than the sum of its proper divisors (230473).

12443111 is an equidigital number, since it uses as much as digits as its factorization.

12443111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its digits is 96, while the sum is 17.

The square root of 12443111 is about 3527.4794117046. The cubic root of 12443111 is about 231.7268324198.

Adding to 12443111 its reverse (11134421), we get a palindrome (23577532).

The spelling of 12443111 in words is "twelve million, four hundred forty-three thousand, one hundred eleven".