2001033333021 has 8 divisors (see below), whose sum is σ = 2692979439264. Its totient is φ = 1321554724400.

The previous prime is 2001033333011. The next prime is 2001033333059. The reversal of 2001033333021 is 1203333301002.

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 2001033333021 - 2¹⁸ = 2001033070877 is a prime.

It is a super-2 number, since 2×2001033333021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001033333011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3116874030 + ... + 3116874671.

It is an arithmetic number, because the mean of its divisors is an integer number (336622429908).

Almost surely, 2^{2001033333021} is an apocalyptic number.

It is an amenable number.

2001033333021 is a deficient number, since it is larger than the sum of its proper divisors (691946106243).

2001033333021 is a wasteful number, since it uses less digits than its factorization.

2001033333021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233748811.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 2001033333021 its reverse (1203333301002), we get a palindrome (3204366634023).

The spelling of 2001033333021 in words is "two trillion, one billion, thirty-three million, three hundred thirty-three thousand, twenty-one".