33013233021 has 4 divisors (see below), whose sum is σ = 44017644032. Its totient is φ = 22008822012.

The previous prime is 33013233013. The next prime is 33013233049. The reversal of 33013233021 is 12033231033.

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.

It is not a de Polignac number, because 33013233021 - 2³ = 33013233013 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 (33013233061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5502205501 + ... + 5502205506.

It is an arithmetic number, because the mean of its divisors is an integer number (11004411008).

Almost surely, 2^33013233021 is an apocalyptic number.

It is an amenable number.

33013233021 is a deficient number, since it is larger than the sum of its proper divisors (11004411011).

33013233021 is a wasteful number, since it uses less digits than its factorization.

33013233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004411010.

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

Adding to 33013233021 its reverse (12033231033), we get a palindrome (45046464054).

The spelling of 33013233021 in words is "thirty-three billion, thirteen million, two hundred thirty-three thousand, twenty-one".