33133233333221 has 96 divisors (see below), whose sum is σ = 41922951782400. Its totient is φ = 25554093062400.

The previous prime is 33133233333169. The next prime is 33133233333241. The reversal of 33133233333221 is 12233333233133.

It is not a de Polignac number, because 33133233333221 - 2⁶ = 33133233333157 is a prime.

It is a super-2 number, since 2×33133233333221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33133233333241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7808914526 + ... + 7808918768.

It is an arithmetic number, because the mean of its divisors is an integer number (436697414400).

Almost surely, 2^{33133233333221} is an apocalyptic number.

33133233333221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33133233333221 is a deficient number, since it is larger than the sum of its proper divisors (8789718449179).

33133233333221 is a wasteful number, since it uses less digits than its factorization.

33133233333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931 (or 4870 counting only the distinct ones).

The product of its digits is 157464, while the sum is 35.

Adding to 33133233333221 its reverse (12233333233133), we get a palindrome (45366566566354).

The spelling of 33133233333221 in words is "thirty-three trillion, one hundred thirty-three billion, two hundred thirty-three million, three hundred thirty-three thousand, two hundred twenty-one".