20330111133220 has 192 divisors, whose sum is σ = 51166121610240. Its totient is φ = 6640615415808.

The previous prime is 20330111133203. The next prime is 20330111133301. The reversal of 20330111133220 is 2233111103302.

It is a junction number, because it is equal to n+sod(n) for n = 20330111133191 and 20330111133200.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47270992 + ... + 47699128.

It is an arithmetic number, because the mean of its divisors is an integer number (266490216720).

Almost surely, 2^{20330111133220} is an apocalyptic number.

20330111133220 is a gapful number since it is divisible by the number (20) 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 20330111133220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25583060805120).

20330111133220 is an abundant number, since it is smaller than the sum of its proper divisors (30836010477020).

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

20330111133220 is a wasteful number, since it uses less digits than its factorization.

20330111133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428382 (or 428380 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20330111133220 its reverse (2233111103302), we get a palindrome (22563222236522).

The spelling of 20330111133220 in words is "twenty trillion, three hundred thirty billion, one hundred eleven million, one hundred thirty-three thousand, two hundred twenty".