12321211002112 has 72 divisors (see below), whose sum is σ = 24685235975456. Its totient is φ = 6137832278016.

The previous prime is 12321211002103. The next prime is 12321211002137. The reversal of 12321211002112 is 21120011212321.

It is a self number, because there is not a number n which added to its sum of digits gives 12321211002112.

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 7 ways as a sum of consecutive naturals, for example, 656876638 + ... + 656895394.

Almost surely, 2^{12321211002112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321211002112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12342617987728).

12321211002112 is an abundant number, since it is smaller than the sum of its proper divisors (12364024973344).

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

12321211002112 is an equidigital number, since it uses as much as digits as its factorization.

12321211002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28123 (or 28109 counting only the distinct ones).

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

Adding to 12321211002112 its reverse (21120011212321), we get a palindrome (33441222214433).

The spelling of 12321211002112 in words is "twelve trillion, three hundred twenty-one billion, two hundred eleven million, two thousand, one hundred twelve".