12001347 has 6 divisors (see below), whose sum is σ = 17335292. Its totient is φ = 8000892.

The previous prime is 12001333. The next prime is 12001349. The reversal of 12001347 is 74310021.

12001347 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12001347 - 2⁸ = 12001091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666733 + ... + 666750.

Almost surely, 2^12001347 is an apocalyptic number.

12001347 is a deficient number, since it is larger than the sum of its proper divisors (5333945).

12001347 is a wasteful number, since it uses less digits than its factorization.

12001347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333489 (or 1333486 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12001347 is about 3464.2960323852. The cubic root of 12001347 is about 228.9514144684.

Adding to 12001347 its reverse (74310021), we get a palindrome (86311368).

The spelling of 12001347 in words is "twelve million, one thousand, three hundred forty-seven".