12020002001 has 4 divisors (see below), whose sum is σ = 13737145152. Its totient is φ = 10302858852.

The previous prime is 12020001989. The next prime is 12020002019. The reversal of 12020002001 is 10020002021.

12020002001 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.

It is a cyclic number.

It is not a de Polignac number, because 12020002001 - 2⁶ = 12020001937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12020002001.

It is not an unprimeable number, because it can be changed into a prime (12020002301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858571565 + ... + 858571578.

It is an arithmetic number, because the mean of its divisors is an integer number (3434286288).

Almost surely, 2^12020002001 is an apocalyptic number.

It is an amenable number.

12020002001 is a deficient number, since it is larger than the sum of its proper divisors (1717143151).

12020002001 is an equidigital number, since it uses as much as digits as its factorization.

12020002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717143150.

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

Adding to 12020002001 its reverse (10020002021), we get a palindrome (22040004022).

The spelling of 12020002001 in words is "twelve billion, twenty million, two thousand, one".