33321233220 has 96 divisors (see below), whose sum is σ = 101846699136. Its totient is φ = 8072678400.

The previous prime is 33321233207. The next prime is 33321233251. The reversal of 33321233220 is 2233212333.

It is a super-2 number, since 2×33321233220² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1065000 + ... + 1095840.

It is an arithmetic number, because the mean of its divisors is an integer number (1060903116).

Almost surely, 2^33321233220 is an apocalyptic number.

33321233220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33321233220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50923349568).

33321233220 is an abundant number, since it is smaller than the sum of its proper divisors (68525465916).

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

33321233220 is a wasteful number, since it uses less digits than its factorization.

33321233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32501 (or 32499 counting only the distinct ones).

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

Adding to 33321233220 its reverse (2233212333), we get a palindrome (35554445553).

The spelling of 33321233220 in words is "thirty-three billion, three hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty".