33321222220 has 96 divisors (see below), whose sum is σ = 82626578496. Its totient is φ = 11127782400.

The previous prime is 33321222199. The next prime is 33321222223. The reversal of 33321222220 is 2222212333.

It is a super-2 number, since 2×33321222220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 33321222191 and 33321222200.

It is not an unprimeable number, because it can be changed into a prime (33321222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 533850 + ... + 592990.

It is an arithmetic number, because the mean of its divisors is an integer number (860693526).

Almost surely, 2^33321222220 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 33321222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41313289248).

33321222220 is an abundant number, since it is smaller than the sum of its proper divisors (49305356276).

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

33321222220 is a wasteful number, since it uses less digits than its factorization.

33321222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59371 (or 59369 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 33321222220 its reverse (2222212333), we get a palindrome (35543434553).

The spelling of 33321222220 in words is "thirty-three billion, three hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty".