12120021022112 has 192 divisors, whose sum is σ = 25948109327616. Its totient is φ = 5557848637440.

The previous prime is 12120021022099. The next prime is 12120021022159. The reversal of 12120021022112 is 21122012002121.

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 31 ways as a sum of consecutive naturals, for example, 483376808 + ... + 483401880.

It is an arithmetic number, because the mean of its divisors is an integer number (135146402748).

Almost surely, 2^{12120021022112} 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 12120021022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12974054663808).

12120021022112 is an abundant number, since it is smaller than the sum of its proper divisors (13828088305504).

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

12120021022112 is a wasteful number, since it uses less digits than its factorization.

12120021022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25423 (or 25415 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12120021022112 its reverse (21122012002121), we get a palindrome (33242033024233).

The spelling of 12120021022112 in words is "twelve trillion, one hundred twenty billion, twenty-one million, twenty-two thousand, one hundred twelve".