2220020020 has 12 divisors (see below), whose sum is σ = 4662042084. Its totient is φ = 888008000.

The previous prime is 2220020003. The next prime is 2220020107. The reversal of 2220020020 is 200200222.

It can be written as a sum of positive squares in 2 ways, for example, as 577825444 + 1642194576 = 24038^2 + 40524^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

2220020020 is a modest number, since divided by 20020 gives 2220 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2220019979 and 2220020006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55500481 + ... + 55500520.

It is an arithmetic number, because the mean of its divisors is an integer number (388503507).

Almost surely, 2^2220020020 is an apocalyptic number.

2220020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220020020 is an abundant number, since it is smaller than the sum of its proper divisors (2442022064).

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

2220020020 is a wasteful number, since it uses less digits than its factorization.

2220020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111001010 (or 111001008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2220020020 is about 47117.0884074982. The cubic root of 2220020020 is about 1304.5246714059.

Adding to 2220020020 its reverse (200200222), we get a palindrome (2420220242).

It can be divided in two parts, 2 and 220020020, that added together give a palindrome (220020022).

The spelling of 2220020020 in words is "two billion, two hundred twenty million, twenty thousand, twenty".