2001231013297 has 4 divisors (see below), whose sum is σ = 2026563051520. Its totient is φ = 1975898975076.

The previous prime is 2001231013193. The next prime is 2001231013321. The reversal of 2001231013297 is 7923101321002.

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-2001231013297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001231013097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12666018993 + ... + 12666019150.

It is an arithmetic number, because the mean of its divisors is an integer number (506640762880).

Almost surely, 2^{2001231013297} is an apocalyptic number.

It is an amenable number.

2001231013297 is a deficient number, since it is larger than the sum of its proper divisors (25332038223).

2001231013297 is an equidigital number, since it uses as much as digits as its factorization.

2001231013297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25332038222.

The product of its (nonzero) digits is 4536, while the sum is 31.

Adding to 2001231013297 its reverse (7923101321002), we get a palindrome (9924332334299).

The spelling of 2001231013297 in words is "two trillion, one billion, two hundred thirty-one million, thirteen thousand, two hundred ninety-seven".