12111110122122 has 24 divisors (see below), whose sum is σ = 28626260289120. Its totient is φ = 3670033370280.

The previous prime is 12111110122121. The next prime is 12111110122171. The reversal of 12111110122122 is 22122101111121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12111110122095 and 12111110122104.

It is not an unprimeable number, because it can be changed into a prime (12111110122121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30583611222 + ... + 30583611617.

It is an arithmetic number, because the mean of its divisors is an integer number (1192760845380).

Almost surely, 2^{12111110122122} is an apocalyptic number.

12111110122122 is an abundant number, since it is smaller than the sum of its proper divisors (16515150166998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111110122122 is a wasteful number, since it uses less digits than its factorization.

12111110122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61167222858 (or 61167222855 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12111110122122 its reverse (22122101111121), we get a palindrome (34233211233243).

The spelling of 12111110122122 in words is "twelve trillion, one hundred eleven billion, one hundred ten million, one hundred twenty-two thousand, one hundred twenty-two".