12111110242 has 48 divisors (see below), whose sum is σ = 23085582912. Its totient is φ = 4629418560.

The previous prime is 12111110237. The next prime is 12111110257. The reversal of 12111110242 is 24201111121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 418588 + ... + 446584.

It is an arithmetic number, because the mean of its divisors is an integer number (480949644).

Almost surely, 2^12111110242 is an apocalyptic number.

12111110242 is a deficient number, since it is larger than the sum of its proper divisors (10974472670).

12111110242 is a wasteful number, since it uses less digits than its factorization.

12111110242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28123 (or 28070 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111110242 its reverse (24201111121), we get a palindrome (36312221363).

The spelling of 12111110242 in words is "twelve billion, one hundred eleven million, one hundred ten thousand, two hundred forty-two".