12001001232 has 160 divisors (see below), whose sum is σ = 35357736960. Its totient is φ = 3474432000.

The previous prime is 12001001149. The next prime is 12001001239. The reversal of 12001001232 is 23210010021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12001001239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288432 + ... + 1297712.

It is an arithmetic number, because the mean of its divisors is an integer number (220985856).

Almost surely, 2^12001001232 is an apocalyptic number.

12001001232 is a gapful number since it is divisible by the number (12) 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 12001001232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17678868480).

12001001232 is an abundant number, since it is smaller than the sum of its proper divisors (23356735728).

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

12001001232 is a wasteful number, since it uses less digits than its factorization.

12001001232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9413 (or 9407 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12001001232 its reverse (23210010021), we get a palindrome (35211011253).

The spelling of 12001001232 in words is "twelve billion, one million, one thousand, two hundred thirty-two".