120002200020 has 144 divisors (see below), whose sum is σ = 366990886080. Its totient is φ = 31738710528.

The previous prime is 120002199983. The next prime is 120002200039. The reversal of 120002200020 is 20002200021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120002199975 and 120002200011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35851987 + ... + 35855333.

It is an arithmetic number, because the mean of its divisors is an integer number (2548547820).

Almost surely, 2^120002200020 is an apocalyptic number.

120002200020 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 120002200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183495443040).

120002200020 is an abundant number, since it is smaller than the sum of its proper divisors (246988686060).

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

120002200020 is a wasteful number, since it uses less digits than its factorization.

120002200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934 (or 4929 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 120002200020 its reverse (20002200021), we get a palindrome (140004400041).

Subtracting from 120002200020 its reverse (20002200021), we obtain a palindrome (99999999999).

The spelling of 120002200020 in words is "one hundred twenty billion, two million, two hundred thousand, twenty".