12002001 has 16 divisors (see below), whose sum is σ = 17522688. Its totient is φ = 7246800.

The previous prime is 12001999. The next prime is 12002059. The reversal of 12002001 is 10020021.

It is a happy number.

12002001 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12002001 - 2¹ = 12001999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11616 + ... + 12606.

It is an arithmetic number, because the mean of its divisors is an integer number (1095168).

Almost surely, 2^12002001 is an apocalyptic number.

12002001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12002001 is a deficient number, since it is larger than the sum of its proper divisors (5520687).

12002001 is a wasteful number, since it uses less digits than its factorization.

12002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 12002001 is about 3464.3904225708. The cubic root of 12002001 is about 228.9555732101.

Adding to 12002001 its reverse (10020021), we get a palindrome (22022022).

It can be divided in two parts, 1 and 2002001, that added together give a palindrome (2002002).

The spelling of 12002001 in words is "twelve million, two thousand, one".