2001032331021 has 24 divisors (see below), whose sum is σ = 2916425191680. Its totient is φ = 1322004491136.

The previous prime is 2001032331019. The next prime is 2001032331047. The reversal of 2001032331021 is 1201332301002.

2001032331021 is a `hidden beast` number, since 2 + 0 + 0 + 10 + 323 + 310 + 21 = 666.

It is not a de Polignac number, because 2001032331021 - 2¹ = 2001032331019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001032330985 and 2001032331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001032331091) 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 23 ways as a sum of consecutive naturals, for example, 6333220 + ... + 6641666.

It is an arithmetic number, because the mean of its divisors is an integer number (121517716320).

Almost surely, 2^{2001032331021} is an apocalyptic number.

It is an amenable number.

2001032331021 is a deficient number, since it is larger than the sum of its proper divisors (915392860659).

2001032331021 is a wasteful number, since it uses less digits than its factorization.

2001032331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314945 (or 314942 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 2001032331021 its reverse (1201332301002), we get a palindrome (3202364632023).

The spelling of 2001032331021 in words is "two trillion, one billion, thirty-two million, three hundred thirty-one thousand, twenty-one".