12143342111 has 4 divisors (see below), whose sum is σ = 12782465400. Its totient is φ = 11504218824.

The previous prime is 12143342093. The next prime is 12143342119. The reversal of 12143342111 is 11124334121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11124334121 = 15773 ⋅705277.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12143342111 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 (12143342119) 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 3 ways as a sum of consecutive naturals, for example, 319561616 + ... + 319561653.

It is an arithmetic number, because the mean of its divisors is an integer number (3195616350).

Almost surely, 2^12143342111 is an apocalyptic number.

12143342111 is a deficient number, since it is larger than the sum of its proper divisors (639123289).

12143342111 is an equidigital number, since it uses as much as digits as its factorization.

12143342111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639123288.

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

Adding to 12143342111 its reverse (11124334121), we get a palindrome (23267676232).

The spelling of 12143342111 in words is "twelve billion, one hundred forty-three million, three hundred forty-two thousand, one hundred eleven".