12111210121112 has 32 divisors (see below), whose sum is σ = 22805949158400. Its totient is φ = 6029676332064.

The previous prime is 12111210121097. The next prime is 12111210121117. The reversal of 12111210121112 is 21112101211121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111210121117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449908 + ... + 5130755.

It is an arithmetic number, because the mean of its divisors is an integer number (712685911200).

Almost surely, 2^{12111210121112} is an apocalyptic number.

It is an amenable number.

12111210121112 is a deficient number, since it is larger than the sum of its proper divisors (10694739037288).

12111210121112 is a wasteful number, since it uses less digits than its factorization.

12111210121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6581655 (or 6581651 counting only the distinct ones).

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

Adding to 12111210121112 its reverse (21112101211121), we get a palindrome (33223311332233).

The spelling of 12111210121112 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, one hundred twelve".