2220222020 has 48 divisors (see below), whose sum is σ = 4850118000. Its totient is φ = 852687360.

The previous prime is 2220221951. The next prime is 2220222023. The reversal of 2220222020 is 202220222.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 771506176 + 1448715844 = 27776^2 + 38062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2220221986 and 2220222004.

It is not an unprimeable number, because it can be changed into a prime (2220222023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 94406 + ... + 115554.

It is an arithmetic number, because the mean of its divisors is an integer number (101044125).

Almost surely, 2^2220222020 is an apocalyptic number.

2220222020 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 2220222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2425059000).

2220222020 is an abundant number, since it is smaller than the sum of its proper divisors (2629895980).

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

2220222020 is a wasteful number, since it uses less digits than its factorization.

2220222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21368 (or 21366 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2220222020 is about 47119.2319546913. The cubic root of 2220222020 is about 1304.5642365133.

Adding to 2220222020 its reverse (202220222), we get a palindrome (2422442242).

It can be divided in two parts, 2 and 220222020, that added together give a palindrome (220222022).

The spelling of 2220222020 in words is "two billion, two hundred twenty million, two hundred twenty-two thousand, twenty".