12021112111112 has 32 divisors (see below), whose sum is σ = 24274391624280. Its totient is φ = 5547978808320.

The previous prime is 12021112111051. The next prime is 12021112111171. The reversal of 12021112111112 is 21111121112021.

It can be written as a sum of positive squares in 4 ways, for example, as 5977017702436 + 6044094408676 = 2444794^2 + 2458474^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207662 + ... + 4907682.

Almost surely, 2^{12021112111112} is an apocalyptic number.

It is an amenable number.

12021112111112 is an abundant number, since it is smaller than the sum of its proper divisors (12253279513168).

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

12021112111112 is a wasteful number, since it uses less digits than its factorization.

12021112111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724633 (or 4724629 counting only the distinct ones).

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

Adding to 12021112111112 its reverse (21111121112021), we get a palindrome (33132233223133).

Subtracting 12021112111112 from its reverse (21111121112021), we obtain a palindrome (9090009000909).

The spelling of 12021112111112 in words is "twelve trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred twelve".