12111021320212 has 96 divisors (see below), whose sum is σ = 23804450208000. Its totient is φ = 5357697343488.

The previous prime is 12111021320197. The next prime is 12111021320249. The reversal of 12111021320212 is 21202312011121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12111021320212.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 468516664 + ... + 468542512.

It is an arithmetic number, because the mean of its divisors is an integer number (247963023000).

Almost surely, 2^{12111021320212} is an apocalyptic number.

It is an amenable number.

12111021320212 is a deficient number, since it is larger than the sum of its proper divisors (11693428887788).

12111021320212 is a wasteful number, since it uses less digits than its factorization.

12111021320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28673 (or 28671 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12111021320212 its reverse (21202312011121), we get a palindrome (33313333331333).

The spelling of 12111021320212 in words is "twelve trillion, one hundred eleven billion, twenty-one million, three hundred twenty thousand, two hundred twelve".