120002121020 has 12 divisors (see below), whose sum is σ = 252004454184. Its totient is φ = 48000848400.

The previous prime is 120002121013. The next prime is 120002121061. The reversal of 120002121020 is 20121200021.

It is a happy number.

120002121020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 120002120992 and 120002121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000053006 + ... + 3000053045.

It is an arithmetic number, because the mean of its divisors is an integer number (21000371182).

Almost surely, 2^120002121020 is an apocalyptic number.

120002121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120002121020 is an abundant number, since it is smaller than the sum of its proper divisors (132002333164).

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

120002121020 is a wasteful number, since it uses less digits than its factorization.

120002121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000106060 (or 6000106058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120002121020 its reverse (20121200021), we get a palindrome (140123321041).

The spelling of 120002121020 in words is "one hundred twenty billion, two million, one hundred twenty-one thousand, twenty".