12001320001 has 8 divisors (see below), whose sum is σ = 13093221600. Its totient is φ = 10909563840.

The previous prime is 12001319987. The next prime is 12001320047. The reversal of 12001320001 is 10002310021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001320001 - 2⁹ = 12001319489 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 12001320001.

It is not an unprimeable number, because it can be changed into a prime (12001320301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207090 + ... + 258628.

It is an arithmetic number, because the mean of its divisors is an integer number (1636652700).

Almost surely, 2^12001320001 is an apocalyptic number.

12001320001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001320001 is a deficient number, since it is larger than the sum of its proper divisors (1091901599).

12001320001 is a wasteful number, since it uses less digits than its factorization.

12001320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72719.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 12001320001 its reverse (10002310021), we get a palindrome (22003630022).

The spelling of 12001320001 in words is "twelve billion, one million, three hundred twenty thousand, one".