12002002001 has 16 divisors (see below), whose sum is σ = 13304347200. Its totient is φ = 10736239680.

The previous prime is 12002001959. The next prime is 12002002009. The reversal of 12002002001 is 10020020021.

It is a cyclic number.

It is not a de Polignac number, because 12002002001 - 2¹⁸ = 12001739857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12002002001.

It is not an unprimeable number, because it can be changed into a prime (12002002009) 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, 141155 + ... + 209591.

It is an arithmetic number, because the mean of its divisors is an integer number (831521700).

Almost surely, 2^12002002001 is an apocalyptic number.

12002002001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12002002001 is a deficient number, since it is larger than the sum of its proper divisors (1302345199).

12002002001 is a wasteful number, since it uses less digits than its factorization.

12002002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68704.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 12002002001 its reverse (10020020021), we get a palindrome (22022022022).

It can be divided in two parts, 1 and 2002002001, that added together give a palindrome (2002002002).

The spelling of 12002002001 in words is "twelve billion, two million, two thousand, one".