12120120222112 has 72 divisors (see below), whose sum is σ = 27775886497380. Its totient is φ = 5190847764480.

The previous prime is 12120120222107. The next prime is 12120120222127. The reversal of 12120120222112 is 21122202102121.

It can be written as a sum of positive squares in 2 ways, for example, as 9784859461776 + 2335260760336 = 3128076^2 + 1528156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12120120222112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260839 + ... + 4930342.

Almost surely, 2^{12120120222112} 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 12120120222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13887943248690).

12120120222112 is an abundant number, since it is smaller than the sum of its proper divisors (15655766275268).

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

12120120222112 is a wasteful number, since it uses less digits than its factorization.

12120120222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5192694 (or 5192679 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12120120222112 its reverse (21122202102121), we get a palindrome (33242322324233).

The spelling of 12120120222112 in words is "twelve trillion, one hundred twenty billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twelve".