12002012001 has 32 divisors (see below), whose sum is σ = 20325984000. Its totient is φ = 6856565760.

The previous prime is 12002011993. The next prime is 12002012027. The reversal of 12002012001 is 10021020021.

It is not a de Polignac number, because 12002012001 - 2³ = 12002011993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12002012081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1384641 + ... + 1393281.

It is an arithmetic number, because the mean of its divisors is an integer number (635187000).

Almost surely, 2^12002012001 is an apocalyptic number.

It is an amenable number.

12002012001 is a deficient number, since it is larger than the sum of its proper divisors (8323971999).

12002012001 is an equidigital number, since it uses as much as digits as its factorization.

12002012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16006 (or 16000 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12002012001 its reverse (10021020021), we get a palindrome (22023032022).

The spelling of 12002012001 in words is "twelve billion, two million, twelve thousand, one".