12020121220120 has 64 divisors (see below), whose sum is σ = 29126302521120. Its totient is φ = 4438103491584.

The previous prime is 12020121220087. The next prime is 12020121220169. The reversal of 12020121220120 is 2102212102021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12020121220094 and 12020121220103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26897947 + ... + 27341173.

Almost surely, 2^{12020121220120} is an apocalyptic number.

12020121220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020121220120 is an abundant number, since it is smaller than the sum of its proper divisors (17106181301000).

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

12020121220120 is a wasteful number, since it uses less digits than its factorization.

12020121220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495404 (or 495400 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12020121220120 its reverse (2102212102021), we get a palindrome (14122333322141).

The spelling of 12020121220120 in words is "twelve trillion, twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty".