2001231013337 has 2 divisors, whose sum is σ = 2001231013338. Its totient is φ = 2001231013336.

The previous prime is 2001231013321. The next prime is 2001231013339. The reversal of 2001231013337 is 7333101321002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1958821377241 + 42409636096 = 1399579^2 + 205936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001231013337 - 2⁴ = 2001231013321 is a prime.

Together with 2001231013339, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2001231013339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000615506668 + 1000615506669.

It is an arithmetic number, because the mean of its divisors is an integer number (1000615506669).

Almost surely, 2^{2001231013337} is an apocalyptic number.

It is an amenable number.

2001231013337 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001231013337 is an equidigital number, since it uses as much as digits as its factorization.

2001231013337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

Adding to 2001231013337 its reverse (7333101321002), we get a palindrome (9334332334339).

The spelling of 2001231013337 in words is "two trillion, one billion, two hundred thirty-one million, thirteen thousand, three hundred thirty-seven".