12111110112442 has 16 divisors (see below), whose sum is σ = 19818421726752. Its totient is φ = 5504982955920.

The previous prime is 12111110112397. The next prime is 12111110112443. The reversal of 12111110112442 is 24421101111121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (12111110112443) 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, 1485528 + ... + 5140915.

It is an arithmetic number, because the mean of its divisors is an integer number (1238651357922).

Almost surely, 2^{12111110112442} is an apocalyptic number.

12111110112442 is a deficient number, since it is larger than the sum of its proper divisors (7707311614310).

12111110112442 is a wasteful number, since it uses less digits than its factorization.

12111110112442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709533.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 12111110112442 its reverse (24421101111121), we get a palindrome (36532211223563).

The spelling of 12111110112442 in words is "twelve trillion, one hundred eleven billion, one hundred ten million, one hundred twelve thousand, four hundred forty-two".