12012121222112 has 48 divisors (see below), whose sum is σ = 25850050515072. Its totient is φ = 5449200040320.

The previous prime is 12012121222081. The next prime is 12012121222117. The reversal of 12012121222112 is 21122212121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012121222117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33744758 + ... + 34098869.

It is an arithmetic number, because the mean of its divisors is an integer number (538542719064).

Almost surely, 2^{12012121222112} is an apocalyptic number.

It is an amenable number.

12012121222112 is an abundant number, since it is smaller than the sum of its proper divisors (13837929292960).

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

12012121222112 is a wasteful number, since it uses less digits than its factorization.

12012121222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67844151 (or 67844143 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12012121222112 its reverse (21122212121021), we get a palindrome (33134333343133).

The spelling of 12012121222112 in words is "twelve trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".