12000020002001 has 4 divisors (see below), whose sum is σ = 12521760002112. Its totient is φ = 11478280001892.

The previous prime is 12000020001979. The next prime is 12000020002073. The reversal of 12000020002001 is 10020002000021.

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 a de Polignac number, because none of the positive numbers 2^k-12000020002001 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 12000020002001.

It is not an unprimeable number, because it can be changed into a prime (12000020052001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260870000021 + ... + 260870000066.

It is an arithmetic number, because the mean of its divisors is an integer number (3130440000528).

Almost surely, 2^{12000020002001} is an apocalyptic number.

It is an amenable number.

12000020002001 is a deficient number, since it is larger than the sum of its proper divisors (521740000111).

12000020002001 is an equidigital number, since it uses as much as digits as its factorization.

12000020002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521740000110.

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

Adding to 12000020002001 its reverse (10020002000021), we get a palindrome (22020022002022).

The spelling of 12000020002001 in words is "twelve trillion, twenty million, two thousand, one".