12012122112 has 104 divisors (see below), whose sum is σ = 32131654800. Its totient is φ = 3991142400.

The previous prime is 12012122099. The next prime is 12012122147. The reversal of 12012122112 is 21122121021.

It is a junction number, because it is equal to n+sod(n) for n = 12012122091 and 12012122100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4287112 + ... + 4289912.

Almost surely, 2^12012122112 is an apocalyptic number.

12012122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12012122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16065827400).

12012122112 is an abundant number, since it is smaller than the sum of its proper divisors (20119532688).

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

12012122112 is an equidigital number, since it uses as much as digits as its factorization.

12012122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012122112 its reverse (21122121021), we get a palindrome (33134243133).

The spelling of 12012122112 in words is "twelve billion, twelve million, one hundred twenty-two thousand, one hundred twelve".