33122210220 has 288 divisors, whose sum is σ = 113747699520. Its totient is φ = 7727892480.

The previous prime is 33122210207. The next prime is 33122210221. The reversal of 33122210220 is 2201222133.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33122210193 and 33122210202.

It is not an unprimeable number, because it can be changed into a prime (33122210221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22795014 + ... + 22796466.

It is an arithmetic number, because the mean of its divisors is an integer number (394957290).

Almost surely, 2^33122210220 is an apocalyptic number.

33122210220 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 33122210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56873849760).

33122210220 is an abundant number, since it is smaller than the sum of its proper divisors (80625489300).

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

33122210220 is a wasteful number, since it uses less digits than its factorization.

33122210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 33122210220 its reverse (2201222133), we get a palindrome (35323432353).

It can be divided in two parts, 33122 and 210220, that added together give a palindrome (243342).

The spelling of 33122210220 in words is "thirty-three billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty".