12132001 has 4 divisors (see below), whose sum is σ = 13865152. Its totient is φ = 10398852.

The previous prime is 12131963. The next prime is 12132011. The reversal of 12132001 is 10023121.

12132001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10023121 = 2837 ⋅3533.

It is a cyclic number.

It is not a de Polignac number, because 12132001 - 2¹⁵ = 12099233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12132011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866565 + ... + 866578.

It is an arithmetic number, because the mean of its divisors is an integer number (3466288).

Almost surely, 2^12132001 is an apocalyptic number.

It is an amenable number.

12132001 is a deficient number, since it is larger than the sum of its proper divisors (1733151).

12132001 is an equidigital number, since it uses as much as digits as its factorization.

12132001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733150.

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

The square root of 12132001 is about 3483.1022092382. The cubic root of 12132001 is about 229.7792525990.

Adding to 12132001 its reverse (10023121), we get a palindrome (22155122).

The spelling of 12132001 in words is "twelve million, one hundred thirty-two thousand, one".