2001330331321 has 4 divisors (see below), whose sum is σ = 2001333906000. Its totient is φ = 2001326756644.

The previous prime is 2001330331303. The next prime is 2001330331331. The reversal of 2001330331321 is 1231330331002.

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 not a de Polignac number, because 2001330331321 - 2²⁹ = 2000793460409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001330331292 and 2001330331301.

It is not an unprimeable number, because it can be changed into a prime (2001330331331) 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, 744871 + ... + 2134828.

It is an arithmetic number, because the mean of its divisors is an integer number (500333476500).

Almost surely, 2^{2001330331321} is an apocalyptic number.

It is an amenable number.

2001330331321 is a deficient number, since it is larger than the sum of its proper divisors (3574679).

2001330331321 is an equidigital number, since it uses as much as digits as its factorization.

2001330331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3574678.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 2001330331321 its reverse (1231330331002), we get a palindrome (3232660662323).

The spelling of 2001330331321 in words is "two trillion, one billion, three hundred thirty million, three hundred thirty-one thousand, three hundred twenty-one".