20323302032220 has 384 divisors, whose sum is σ = 66254746521600. Its totient is φ = 4641414877440.

The previous prime is 20323302032197. The next prime is 20323302032221. The reversal of 20323302032220 is 2223020332302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323302032221) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 271566447 + ... + 271641273.

It is an arithmetic number, because the mean of its divisors is an integer number (172538402400).

Almost surely, 2^{20323302032220} is an apocalyptic number.

20323302032220 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 20323302032220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33127373260800).

20323302032220 is an abundant number, since it is smaller than the sum of its proper divisors (45931444489380).

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

20323302032220 is a wasteful number, since it uses less digits than its factorization.

20323302032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75070 (or 75046 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 20323302032220 its reverse (2223020332302), we get a palindrome (22546322364522).

The spelling of 20323302032220 in words is "twenty trillion, three hundred twenty-three billion, three hundred two million, thirty-two thousand, two hundred twenty".