12001010002001 has 4 divisors (see below), whose sum is σ = 12016259062512. Its totient is φ = 11985760941492.

The previous prime is 12001010001971. The next prime is 12001010002019. The reversal of 12001010002001 is 10020001010021.

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-12001010002001 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 12001010002001.

It is not an unprimeable number, because it can be changed into a prime (12001010002901) 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, 7624529075 + ... + 7624530648.

It is an arithmetic number, because the mean of its divisors is an integer number (3004064765628).

Almost surely, 2^{12001010002001} is an apocalyptic number.

It is an amenable number.

12001010002001 is a deficient number, since it is larger than the sum of its proper divisors (15249060511).

12001010002001 is an equidigital number, since it uses as much as digits as its factorization.

12001010002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15249060510.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12001010002001 its reverse (10020001010021), we get a palindrome (22021011012022).

The spelling of 12001010002001 in words is "twelve trillion, one billion, ten million, two thousand, one".