12111231443 has 8 divisors (see below), whose sum is σ = 12842610912. Its totient is φ = 11381958016.

The previous prime is 12111231439. The next prime is 12111231479. The reversal of 12111231443 is 34413211121.

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 12111231443 - 2² = 12111231439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111231403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514655 + ... + 537672.

It is an arithmetic number, because the mean of its divisors is an integer number (1605326364).

Almost surely, 2^12111231443 is an apocalyptic number.

12111231443 is a deficient number, since it is larger than the sum of its proper divisors (731379469).

12111231443 is a wasteful number, since it uses less digits than its factorization.

12111231443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053021.

The product of its digits is 576, while the sum is 23.

Adding to 12111231443 its reverse (34413211121), we get a palindrome (46524442564).

The spelling of 12111231443 in words is "twelve billion, one hundred eleven million, two hundred thirty-one thousand, four hundred forty-three".