2220040020 has 96 divisors (see below), whose sum is σ = 6815692800. Its totient is φ = 535455360.

The previous prime is 2220040019. The next prime is 2220040021. The reversal of 2220040020 is 200400222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2220040019) and next prime (2220040021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2220039978 and 2220040005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220040021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122889 + ... + 139791.

It is an arithmetic number, because the mean of its divisors is an integer number (70996800).

Almost surely, 2^2220040020 is an apocalyptic number.

2220040020 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 2220040020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407846400).

2220040020 is an abundant number, since it is smaller than the sum of its proper divisors (4595652780).

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

2220040020 is a wasteful number, since it uses less digits than its factorization.

2220040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17125 (or 17123 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2220040020 is about 47117.3006442432. The cubic root of 2220040020 is about 1304.5285888503.

Adding to 2220040020 its reverse (200400222), we get a palindrome (2420440242).

It can be divided in two parts, 2 and 220040020, that added together give a palindrome (220040022).

The spelling of 2220040020 in words is "two billion, two hundred twenty million, forty thousand, twenty".