2001001330021 has 8 divisors (see below), whose sum is σ = 2088016902720. Its totient is φ = 1913987050272.

The previous prime is 2001001330019. The next prime is 2001001330051. The reversal of 2001001330021 is 1200331001002.

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 2001001330021 - 2¹ = 2001001330019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001001329983 and 2001001330010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001001330051) 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 7 ways as a sum of consecutive naturals, for example, 4166050 + ... + 4621468.

It is an arithmetic number, because the mean of its divisors is an integer number (261002112840).

Almost surely, 2^{2001001330021} is an apocalyptic number.

It is an amenable number.

2001001330021 is a deficient number, since it is larger than the sum of its proper divisors (87015572699).

2001001330021 is a wasteful number, since it uses less digits than its factorization.

2001001330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646475.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 2001001330021 its reverse (1200331001002), we get a palindrome (3201332331023).

The spelling of 2001001330021 in words is "two trillion, one billion, one million, three hundred thirty thousand, twenty-one".