12001302144 has 160 divisors (see below), whose sum is σ = 38463472740. Its totient is φ = 3692666880.

The previous prime is 12001302109. The next prime is 12001302151. The reversal of 12001302144 is 44120310021.

It can be written as a sum of positive squares in 2 ways, for example, as 9046292544 + 2955009600 = 95112^2 + 54360^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 90264 + ... + 179304.

Almost surely, 2^12001302144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001302144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19231736370).

12001302144 is an abundant number, since it is smaller than the sum of its proper divisors (26462170596).

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

12001302144 is an equidigital number, since it uses as much as digits as its factorization.

12001302144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89080 (or 89059 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12001302144 its reverse (44120310021), we get a palindrome (56121612165).

The spelling of 12001302144 in words is "twelve billion, one million, three hundred two thousand, one hundred forty-four".