120002120000 has 140 divisors (see below), whose sum is σ = 340076515680. Its totient is φ = 41143488000.

The previous prime is 120002119967. The next prime is 120002120047. The reversal of 120002120000 is 21200021.

It is a tau number, because it is divible by the number of its divisors (140).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 120002120000.

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 19 ways as a sum of consecutive naturals, for example, 65711 + ... + 494289.

Almost surely, 2^120002120000 is an apocalyptic number.

120002120000 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 120002120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170038257840).

120002120000 is an abundant number, since it is smaller than the sum of its proper divisors (220074395680).

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

120002120000 is an frugal number, since it uses more digits than its factorization.

120002120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428618 (or 428593 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 120002120000 its reverse (21200021), we get a palindrome (120023320021).

The spelling of 120002120000 in words is "one hundred twenty billion, two million, one hundred twenty thousand".