33021443021 has 16 divisors (see below), whose sum is σ = 40095277440. Its totient is φ = 26589487680.

The previous prime is 33021443011. The next prime is 33021443041. The reversal of 33021443021 is 12034412033.

It is not a de Polignac number, because 33021443021 - 2²⁶ = 32954334157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021443011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2190695 + ... + 2205716.

It is an arithmetic number, because the mean of its divisors is an integer number (2505954840).

Almost surely, 2^33021443021 is an apocalyptic number.

It is an amenable number.

33021443021 is a deficient number, since it is larger than the sum of its proper divisors (7073834419).

33021443021 is a wasteful number, since it uses less digits than its factorization.

33021443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396484.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 33021443021 its reverse (12034412033), we get a palindrome (45055855054).

The spelling of 33021443021 in words is "thirty-three billion, twenty-one million, four hundred forty-three thousand, twenty-one".