20120122222112 has 96 divisors (see below), whose sum is σ = 43822996358400. Its totient is φ = 9017069824000.

The previous prime is 20120122222099. The next prime is 20120122222127. The reversal of 20120122222112 is 21122222102102.

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 15 ways as a sum of consecutive naturals, for example, 7312964 + ... + 9680892.

It is an arithmetic number, because the mean of its divisors is an integer number (456489545400).

Almost surely, 2^{20120122222112} is an apocalyptic number.

20120122222112 is a gapful number since it is divisible by the number (22) 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 20120122222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21911498179200).

20120122222112 is an abundant number, since it is smaller than the sum of its proper divisors (23702874136288).

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

20120122222112 is a wasteful number, since it uses less digits than its factorization.

20120122222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368290 (or 2368282 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20120122222112 its reverse (21122222102102), we get a palindrome (41242344324214).

The spelling of 20120122222112 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".