20120120320000 has 280 divisors, whose sum is σ = 52467579012816. Its totient is φ = 7698087936000.

The previous prime is 20120120319997. The next prime is 20120120320009. The reversal of 20120120320000 is 2302102102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120120320009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117674572 + ... + 117845428.

Almost surely, 2^{20120120320000} is an apocalyptic number.

20120120320000 is a gapful number since it is divisible by the number (20) 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 20120120320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26233789506408).

20120120320000 is an abundant number, since it is smaller than the sum of its proper divisors (32347458692816).

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

20120120320000 is an frugal number, since it uses more digits than its factorization.

20120120320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170926 (or 170887 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20120120320000 its reverse (2302102102), we get a palindrome (20122422422102).

The spelling of 20120120320000 in words is "twenty trillion, one hundred twenty billion, one hundred twenty million, three hundred twenty thousand".