2220212220 has 48 divisors (see below), whose sum is σ = 6221190528. Its totient is φ = 591618880.

The previous prime is 2220212207. The next prime is 2220212221. The reversal of 2220212220 is 222120222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2220212220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220212221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72655 + ... + 98585.

It is an arithmetic number, because the mean of its divisors is an integer number (129608136).

Almost surely, 2^2220212220 is an apocalyptic number.

2220212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220212220 is an abundant number, since it is smaller than the sum of its proper divisors (4000978308).

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

2220212220 is a wasteful number, since it uses less digits than its factorization.

2220212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27370 (or 27368 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2220212220 is about 47119.1279630682. The cubic root of 2220212220 is about 1304.5623170734.

Adding to 2220212220 its reverse (222120222), we get a palindrome (2442332442).

The spelling of 2220212220 in words is "two billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty".