12001121120 has 96 divisors (see below), whose sum is σ = 29109925152. Its totient is φ = 4672991232.

The previous prime is 12001121089. The next prime is 12001121149. The reversal of 12001121120 is 2112110021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2150654 + ... + 2156226.

It is an arithmetic number, because the mean of its divisors is an integer number (303228387).

Almost surely, 2^12001121120 is an apocalyptic number.

12001121120 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 12001121120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14554962576).

12001121120 is an abundant number, since it is smaller than the sum of its proper divisors (17108804032).

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

12001121120 is a wasteful number, since it uses less digits than its factorization.

12001121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944 (or 5936 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12001121120 its reverse (2112110021), we get a palindrome (14113231141).

The spelling of 12001121120 in words is "twelve billion, one million, one hundred twenty-one thousand, one hundred twenty".