33220332321 has 12 divisors (see below), whose sum is σ = 48686548176. Its totient is φ = 20133534520.

The previous prime is 33220332293. The next prime is 33220332323. The reversal of 33220332321 is 12323302233.

It is not a de Polignac number, because 33220332321 - 2⁵ = 33220332289 is a prime.

It is a super-2 number, since 2×33220332321² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33220332291 and 33220332300.

It is not an unprimeable number, because it can be changed into a prime (33220332323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45757671 + ... + 45758396.

It is an arithmetic number, because the mean of its divisors is an integer number (4057212348).

Almost surely, 2^33220332321 is an apocalyptic number.

It is an amenable number.

33220332321 is a deficient number, since it is larger than the sum of its proper divisors (15466215855).

33220332321 is a wasteful number, since it uses less digits than its factorization.

33220332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91516092 (or 91516081 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 33220332321 its reverse (12323302233), we get a palindrome (45543634554).

The spelling of 33220332321 in words is "thirty-three billion, two hundred twenty million, three hundred thirty-two thousand, three hundred twenty-one".