12001312232 has 128 divisors (see below), whose sum is σ = 28983951360. Its totient is φ = 4528085760.

The previous prime is 12001312159. The next prime is 12001312261. The reversal of 12001312232 is 23221310021.

It is a self number, because there is not a number n which added to its sum of digits gives 12001312232.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7215833 + ... + 7217495.

It is an arithmetic number, because the mean of its divisors is an integer number (226437120).

Almost surely, 2^12001312232 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 12001312232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14491975680).

12001312232 is an abundant number, since it is smaller than the sum of its proper divisors (16982639128).

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

12001312232 is a wasteful number, since it uses less digits than its factorization.

12001312232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12001312232 its reverse (23221310021), we get a palindrome (35222622253).

The spelling of 12001312232 in words is "twelve billion, one million, three hundred twelve thousand, two hundred thirty-two".