12001312 has 24 divisors (see below), whose sum is σ = 24872400. Its totient is φ = 5684544.

The previous prime is 12001307. The next prime is 12001333. The reversal of 12001312 is 21310021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9262 + ... + 10477.

It is an arithmetic number, because the mean of its divisors is an integer number (1036350).

Almost surely, 2^12001312 is an apocalyptic number.

It is an amenable number.

12001312 is an abundant number, since it is smaller than the sum of its proper divisors (12871088).

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

12001312 is a wasteful number, since it uses less digits than its factorization.

12001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19768 (or 19760 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12001312 is about 3464.2909808502. The cubic root of 12001312 is about 228.9511919015.

Adding to 12001312 its reverse (21310021), we get a palindrome (33311333).

The spelling of 12001312 in words is "twelve million, one thousand, three hundred twelve".