12111143 has 8 divisors (see below), whose sum is σ = 13238400. Its totient is φ = 10988280.

The previous prime is 12111139. The next prime is 12111149. The reversal of 12111143 is 34111121.

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 12111143 - 2² = 12111139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111149) 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, 7958 + ... + 9356.

It is an arithmetic number, because the mean of its divisors is an integer number (1654800).

Almost surely, 2^12111143 is an apocalyptic number.

12111143 is a deficient number, since it is larger than the sum of its proper divisors (1127257).

12111143 is a wasteful number, since it uses less digits than its factorization.

12111143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197.

The product of its digits is 24, while the sum is 14.

The square root of 12111143 is about 3480.1067512362. The cubic root of 12111143 is about 229.6474940396.

Adding to 12111143 its reverse (34111121), we get a palindrome (46222264).

The spelling of 12111143 in words is "twelve million, one hundred eleven thousand, one hundred forty-three".