20331020322220 has 48 divisors (see below), whose sum is σ = 42952749860160. Its totient is φ = 8083344513024.

The previous prime is 20331020322209. The next prime is 20331020322229. The reversal of 20331020322220 is 2222302013302.

It is a junction number, because it is equal to n+sod(n) for n = 20331020322191 and 20331020322200.

It is not an unprimeable number, because it can be changed into a prime (20331020322229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80598532 + ... + 80850388.

It is an arithmetic number, because the mean of its divisors is an integer number (894848955420).

Almost surely, 2^{20331020322220} is an apocalyptic number.

20331020322220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331020322220 is an abundant number, since it is smaller than the sum of its proper divisors (22621729537940).

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

20331020322220 is a wasteful number, since it uses less digits than its factorization.

20331020322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276202 (or 276200 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20331020322220 its reverse (2222302013302), we get a palindrome (22553322335522).

The spelling of 20331020322220 in words is "twenty trillion, three hundred thirty-one billion, twenty million, three hundred twenty-two thousand, two hundred twenty".