2218040020 has 24 divisors (see below), whose sum is σ = 5323296384. Its totient is φ = 760470816.

The previous prime is 2218039981. The next prime is 2218040021. The reversal of 2218040020 is 200408122.

It is a self number, because there is not a number n which added to its sum of digits gives 2218040020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218040021) 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 7 ways as a sum of consecutive naturals, for example, 7921432 + ... + 7921711.

It is an arithmetic number, because the mean of its divisors is an integer number (221804016).

Almost surely, 2^2218040020 is an apocalyptic number.

2218040020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218040020 is an abundant number, since it is smaller than the sum of its proper divisors (3105256364).

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

2218040020 is a wasteful number, since it uses less digits than its factorization.

2218040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15843159 (or 15843157 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2218040020 is about 47096.0722353786. The cubic root of 2218040020 is about 1304.1367278879.

Adding to 2218040020 its reverse (200408122), we get a palindrome (2418448142).

The spelling of 2218040020 in words is "two billion, two hundred eighteen million, forty thousand, twenty".