12001202001 has 8 divisors (see below), whose sum is σ = 17779558560. Its totient is φ = 8000801316.

The previous prime is 12001201997. The next prime is 12001202011. The reversal of 12001202001 is 10020210021.

It is not a de Polignac number, because 12001202001 - 2² = 12001201997 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12001202011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222244455 + ... + 222244508.

It is an arithmetic number, because the mean of its divisors is an integer number (2222444820).

Almost surely, 2^12001202001 is an apocalyptic number.

It is an amenable number.

12001202001 is a deficient number, since it is larger than the sum of its proper divisors (5778356559).

12001202001 is an equidigital number, since it uses as much as digits as its factorization.

12001202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444488972 (or 444488966 counting only the distinct ones).

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

Adding to 12001202001 its reverse (10020210021), we get a palindrome (22021412022).

The spelling of 12001202001 in words is "twelve billion, one million, two hundred two thousand, one".