33221233220 has 96 divisors (see below), whose sum is σ = 80344320000. Its totient is φ = 11302861824.

The previous prime is 33221233211. The next prime is 33221233271. The reversal of 33221233220 is 2233212233.

It is a super-2 number, since 2×33221233220² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10894256 + ... + 10897304.

It is an arithmetic number, because the mean of its divisors is an integer number (836920000).

Almost surely, 2^33221233220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33221233220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40172160000).

33221233220 is an abundant number, since it is smaller than the sum of its proper divisors (47123086780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33221233220 is a wasteful number, since it uses less digits than its factorization.

33221233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637 (or 3635 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 33221233220 its reverse (2233212233), we get a palindrome (35454445453).

The spelling of 33221233220 in words is "thirty-three billion, two hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty".