2220021020 has 48 divisors (see below), whose sum is σ = 5377881600. Its totient is φ = 754031424.

The previous prime is 2220020993. The next prime is 2220021029. The reversal of 2220021020 is 201200222.

It is a junction number, because it is equal to n+sod(n) for n = 2220020992 and 2220021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220021029) 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, 59120 + ... + 89079.

It is an arithmetic number, because the mean of its divisors is an integer number (112039200).

Almost surely, 2^2220021020 is an apocalyptic number.

2220021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220021020 is an abundant number, since it is smaller than the sum of its proper divisors (3157860580).

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

2220021020 is a wasteful number, since it uses less digits than its factorization.

2220021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148322 (or 148320 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2220021020 is about 47117.0990193581. The cubic root of 2220021020 is about 1304.5248672787.

Adding to 2220021020 its reverse (201200222), we get a palindrome (2421221242).

The spelling of 2220021020 in words is "two billion, two hundred twenty million, twenty-one thousand, twenty".