2321220020 has 96 divisors (see below), whose sum is σ = 5723827200. Its totient is φ = 774213120.

The previous prime is 2321219993. The next prime is 2321220079. The reversal of 2321220020 is 200221232.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2321219977 and 2321220004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1190006 + ... + 1191954.

It is an arithmetic number, because the mean of its divisors is an integer number (59623200).

Almost surely, 2^2321220020 is an apocalyptic number.

2321220020 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 2321220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861913600).

2321220020 is an abundant number, since it is smaller than the sum of its proper divisors (3402607180).

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

2321220020 is a wasteful number, since it uses less digits than its factorization.

2321220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2191 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2321220020 is about 48179.0412939070. The cubic root of 2321220020 is about 1324.0532018612.

Adding to 2321220020 its reverse (200221232), we get a palindrome (2521441252).

The spelling of 2321220020 in words is "two billion, three hundred twenty-one million, two hundred twenty thousand, twenty".