33220313020 has 36 divisors (see below), whose sum is σ = 74107749240. Its totient is φ = 12506468608.

The previous prime is 33220313011. The next prime is 33220313041. The reversal of 33220313020 is 2031302233.

It is a happy number.

It is a super-2 number, since 2×33220313020² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2867950 + ... + 2879509.

It is an arithmetic number, because the mean of its divisors is an integer number (2058548590).

Almost surely, 2^33220313020 is an apocalyptic number.

It is an amenable number.

33220313020 is an abundant number, since it is smaller than the sum of its proper divisors (40887436220).

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

33220313020 is a wasteful number, since it uses less digits than its factorization.

33220313020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747502 (or 5747483 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 33220313020 its reverse (2031302233), we get a palindrome (35251615253).

The spelling of 33220313020 in words is "thirty-three billion, two hundred twenty million, three hundred thirteen thousand, twenty".