12111010111222 has 64 divisors (see below), whose sum is σ = 20562881875200. Its totient is φ = 5299251914880.

The previous prime is 12111010111201. The next prime is 12111010111223. The reversal of 12111010111222 is 22211101011121.

It is a junction number, because it is equal to n+sod(n) for n = 12111010111196 and 12111010111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111010111223) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 466998568 + ... + 467024500.

It is an arithmetic number, because the mean of its divisors is an integer number (321295029300).

Almost surely, 2^{12111010111222} is an apocalyptic number.

12111010111222 is a deficient number, since it is larger than the sum of its proper divisors (8451871763978).

12111010111222 is a wasteful number, since it uses less digits than its factorization.

12111010111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28141.

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

Adding to 12111010111222 its reverse (22211101011121), we get a palindrome (34322111122343).

The spelling of 12111010111222 in words is "twelve trillion, one hundred eleven billion, ten million, one hundred eleven thousand, two hundred twenty-two".