12120220220020 has 192 divisors, whose sum is σ = 28597492143360. Its totient is φ = 4276117094400.

The previous prime is 12120220219993. The next prime is 12120220220039. The reversal of 12120220220020 is 2002202202121.

It is a junction number, because it is equal to n+sod(n) for n = 12120220219976 and 12120220220003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6026960815 + ... + 6026962825.

It is an arithmetic number, because the mean of its divisors is an integer number (148945271580).

Almost surely, 2^{12120220220020} is an apocalyptic number.

12120220220020 is a gapful number since it is divisible by the number (10) 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 12120220220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14298746071680).

12120220220020 is an abundant number, since it is smaller than the sum of its proper divisors (16477271923340).

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

12120220220020 is a wasteful number, since it uses less digits than its factorization.

12120220220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794 (or 3792 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12120220220020 its reverse (2002202202121), we get a palindrome (14122422422141).

The spelling of 12120220220020 in words is "twelve trillion, one hundred twenty billion, two hundred twenty million, two hundred twenty thousand, twenty".