120121020120020 has 24 divisors (see below), whose sum is σ = 252269663401224. Its totient is φ = 48045451638656.

The previous prime is 120121020119941. The next prime is 120121020120037. The reversal of 120121020120020 is 20021020121021.

It can be written as a sum of positive squares in 4 ways, for example, as 9804187994896 + 110316832125124 = 3131164^2 + 10503182^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120121020119977 and 120121020120004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184442399 + ... + 185092518.

It is an arithmetic number, because the mean of its divisors is an integer number (10511235975051).

Almost surely, 2^{120121020120020} is an apocalyptic number.

120121020120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121020120020 is an abundant number, since it is smaller than the sum of its proper divisors (132148643281204).

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

120121020120020 is a wasteful number, since it uses less digits than its factorization.

120121020120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369551179 (or 369551177 counting only the distinct ones).

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

Adding to 120121020120020 its reverse (20021020121021), we get a palindrome (140142040241041).

The spelling of 120121020120020 in words is "one hundred twenty trillion, one hundred twenty-one billion, twenty million, one hundred twenty thousand, twenty".