12001000120 has 64 divisors (see below), whose sum is σ = 27720403200. Its totient is φ = 4673233920.

The previous prime is 12001000097. The next prime is 12001000157. The reversal of 12001000120 is 2100010021.

12001000120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 777922 + ... + 793198.

It is an arithmetic number, because the mean of its divisors is an integer number (433131300).

Almost surely, 2^12001000120 is an apocalyptic number.

12001000120 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 12001000120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13860201600).

12001000120 is an abundant number, since it is smaller than the sum of its proper divisors (15719403080).

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

12001000120 is a wasteful number, since it uses less digits than its factorization.

12001000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15808 (or 15804 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12001000120 its reverse (2100010021), we get a palindrome (14101010141).

Subtracting from 12001000120 its reverse (2100010021), we obtain a palindrome (9900990099).

It can be divided in two parts, 120010001 and 20, that added together give a palindrome (120010021).

The spelling of 12001000120 in words is "twelve billion, one million, one hundred twenty", and thus it is an aban number.