120020121120020 has 48 divisors (see below), whose sum is σ = 274978922033088. Its totient is φ = 43639912872960.

The previous prime is 120020121119999. The next prime is 120020121120043. The reversal of 120020121120020 is 20021121020021.

It is a junction number, because it is equal to n+sod(n) for n = 120020121119977 and 120020121120004.

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, 20992157 + ... + 26090436.

It is an arithmetic number, because the mean of its divisors is an integer number (5728727542356).

Almost surely, 2^{120020121120020} is an apocalyptic number.

120020121120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020121120020 is an abundant number, since it is smaller than the sum of its proper divisors (154958800913068).

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

120020121120020 is a wasteful number, since it uses less digits than its factorization.

120020121120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47094200 (or 47094198 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120020121120020 its reverse (20021121020021), we get a palindrome (140041242140041).

Subtracting from 120020121120020 its reverse (20021121020021), we obtain a palindrome (99999000099999).

The spelling of 120020121120020 in words is "one hundred twenty trillion, twenty billion, one hundred twenty-one million, one hundred twenty thousand, twenty".