33220120020 has 96 divisors (see below), whose sum is σ = 96538780800. Its totient is φ = 8525228544.

The previous prime is 33220119967. The next prime is 33220120039. The reversal of 33220120020 is 2002102233.

It is a super-2 number, since 2×33220120020² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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, 503086 + ... + 565274.

It is an arithmetic number, because the mean of its divisors is an integer number (1005612300).

Almost surely, 2^33220120020 is an apocalyptic number.

33220120020 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 33220120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48269390400).

33220120020 is an abundant number, since it is smaller than the sum of its proper divisors (63318660780).

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

33220120020 is a wasteful number, since it uses less digits than its factorization.

33220120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62537 (or 62535 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 33220120020 its reverse (2002102233), we get a palindrome (35222222253).

The spelling of 33220120020 in words is "thirty-three billion, two hundred twenty million, one hundred twenty thousand, twenty".