33222013220 has 96 divisors (see below), whose sum is σ = 76574647296. Its totient is φ = 12007036800.

The previous prime is 33222013199. The next prime is 33222013229. The reversal of 33222013220 is 2231022233.

It is a super-2 number, since 2×33222013220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33222013192 and 33222013201.

It is not an unprimeable number, because it can be changed into a prime (33222013229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36628007 + ... + 36628913.

It is an arithmetic number, because the mean of its divisors is an integer number (797652576).

Almost surely, 2^33222013220 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 33222013220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38287323648).

33222013220 is an abundant number, since it is smaller than the sum of its proper divisors (43352634076).

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

33222013220 is a wasteful number, since it uses less digits than its factorization.

33222013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 33222013220 its reverse (2231022233), we get a palindrome (35453035453).

It can be divided in two parts, 33222013 and 220, that added together give a palindrome (33222233).

The spelling of 33222013220 in words is "thirty-three billion, two hundred twenty-two million, thirteen thousand, two hundred twenty".