33120120220 has 96 divisors (see below), whose sum is σ = 76324550400. Its totient is φ = 11972620800.

The previous prime is 33120120211. The next prime is 33120120233. The reversal of 33120120220 is 2202102133.

It is a junction number, because it is equal to n+sod(n) for n = 33120120194 and 33120120203.

It is a congruent number.

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, 40939176 + ... + 40939984.

It is an arithmetic number, because the mean of its divisors is an integer number (795047400).

Almost surely, 2^33120120220 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 33120120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38162275200).

33120120220 is an abundant number, since it is smaller than the sum of its proper divisors (43204430180).

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

33120120220 is a wasteful number, since it uses less digits than its factorization.

33120120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 33120120220 its reverse (2202102133), we get a palindrome (35322222353).

The spelling of 33120120220 in words is "thirty-three billion, one hundred twenty million, one hundred twenty thousand, two hundred twenty".