12111111101222 has 48 divisors (see below), whose sum is σ = 21248130169728. Its totient is φ = 5162133755520.

The previous prime is 12111111101203. The next prime is 12111111101231. The reversal of 12111111101222 is 22210111111121.

It is a super-2 number, since 2×12111111101222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12111111101222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50403947 + ... + 50643657.

It is an arithmetic number, because the mean of its divisors is an integer number (442669378536).

Almost surely, 2^{12111111101222} is an apocalyptic number.

12111111101222 is a deficient number, since it is larger than the sum of its proper divisors (9137019068506).

12111111101222 is a wasteful number, since it uses less digits than its factorization.

12111111101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242541 (or 242534 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12111111101222 its reverse (22210111111121), we get a palindrome (34321222212343).

The spelling of 12111111101222 in words is "twelve trillion, one hundred eleven billion, one hundred eleven million, one hundred one thousand, two hundred twenty-two".