12012120112 has 20 divisors (see below), whose sum is σ = 24498403480. Its totient is φ = 5689951488.

The previous prime is 12012120103. The next prime is 12012120149. The reversal of 12012120112 is 21102121021.

12012120112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12012120112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12012120092 and 12012120101.

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 3 ways as a sum of consecutive naturals, for example, 19756473 + ... + 19757080.

It is an arithmetic number, because the mean of its divisors is an integer number (1224920174).

Almost surely, 2^12012120112 is an apocalyptic number.

It is an amenable number.

12012120112 is an abundant number, since it is smaller than the sum of its proper divisors (12486283368).

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

12012120112 is a wasteful number, since it uses less digits than its factorization.

12012120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39513580 (or 39513574 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12012120112 its reverse (21102121021), we get a palindrome (33114241133).

Subtracting 12012120112 from its reverse (21102121021), we obtain a palindrome (9090000909).

The spelling of 12012120112 in words is "twelve billion, twelve million, one hundred twenty thousand, one hundred twelve".