2321220220 has 24 divisors (see below), whose sum is σ = 5317705008. Its totient is φ = 844080000.

The previous prime is 2321220217. The next prime is 2321220221. The reversal of 2321220220 is 220221232.

It is a junction number, because it is equal to n+sod(n) for n = 2321220194 and 2321220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321220221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5275281 + ... + 5275720.

It is an arithmetic number, because the mean of its divisors is an integer number (221571042).

Almost surely, 2^2321220220 is an apocalyptic number.

2321220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321220220 is an abundant number, since it is smaller than the sum of its proper divisors (2996484788).

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

2321220220 is a wasteful number, since it uses less digits than its factorization.

2321220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551021 (or 10551019 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2321220220 is about 48179.0433694983. The cubic root of 2321220220 is about 1324.0532398887.

Adding to 2321220220 its reverse (220221232), we get a palindrome (2541441452).

The spelling of 2321220220 in words is "two billion, three hundred twenty-one million, two hundred twenty thousand, two hundred twenty".