33024013021 has 4 divisors (see below), whose sum is σ = 33111148000. Its totient is φ = 32936878044.

The previous prime is 33024013013. The next prime is 33024013037. The reversal of 33024013021 is 12031042033.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12031042033 = 63389 ⋅189797.

It is a cyclic number.

It is not a de Polignac number, because 33024013021 - 2³ = 33024013013 is a prime.

It is a super-2 number, since 2×33024013021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33024013021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33024013921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43566921 + ... + 43567678.

It is an arithmetic number, because the mean of its divisors is an integer number (8277787000).

Almost surely, 2^33024013021 is an apocalyptic number.

It is an amenable number.

33024013021 is a deficient number, since it is larger than the sum of its proper divisors (87134979).

33024013021 is an equidigital number, since it uses as much as digits as its factorization.

33024013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87134978.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 33024013021 its reverse (12031042033), we get a palindrome (45055055054).

The spelling of 33024013021 in words is "thirty-three billion, twenty-four million, thirteen thousand, twenty-one".