12111443123 has 8 divisors (see below), whose sum is σ = 13264162800. Its totient is φ = 10990304928.

The previous prime is 12111443119. The next prime is 12111443131. The reversal of 12111443123 is 32134411121.

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 12111443123 - 2² = 12111443119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111443143) 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, 7894568 + ... + 7896101.

It is an arithmetic number, because the mean of its divisors is an integer number (1658020350).

Almost surely, 2^12111443123 is an apocalyptic number.

12111443123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12111443123 is a deficient number, since it is larger than the sum of its proper divisors (1152719677).

12111443123 is a wasteful number, since it uses less digits than its factorization.

12111443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15790741.

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

Adding to 12111443123 its reverse (32134411121), we get a palindrome (44245854244).

The spelling of 12111443123 in words is "twelve billion, one hundred eleven million, four hundred forty-three thousand, one hundred twenty-three".