33320120240 has 160 divisors (see below), whose sum is σ = 88419340800. Its totient is φ = 11559004160.

The previous prime is 33320120237. The next prime is 33320120243. The reversal of 33320120240 is 4202102333.

It is an interprime number because it is at equal distance from previous prime (33320120237) and next prime (33320120243).

It is a super-2 number, since 2×33320120240² (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 not an unprimeable number, because it can be changed into a prime (33320120243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8478596 + ... + 8482524.

It is an arithmetic number, because the mean of its divisors is an integer number (552620880).

Almost surely, 2^33320120240 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 33320120240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44209670400).

33320120240 is an abundant number, since it is smaller than the sum of its proper divisors (55099220560).

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

33320120240 is a wasteful number, since it uses less digits than its factorization.

33320120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395 (or 4389 counting only the distinct ones).

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

Adding to 33320120240 its reverse (4202102333), we get a palindrome (37522222573).

The spelling of 33320120240 in words is "thirty-three billion, three hundred twenty million, one hundred twenty thousand, two hundred forty".