2222222120 has 16 divisors (see below), whose sum is σ = 4999999860. Its totient is φ = 888888832.

The previous prime is 2222222111. The next prime is 2222222129. The reversal of 2222222120 is 212222222.

It is an interprime number because it is at equal distance from previous prime (2222222111) and next prime (2222222129).

It can be written as a sum of positive squares in 2 ways, for example, as 2008653124 + 213568996 = 44818^2 + 14614^2 .

It is not an unprimeable number, because it can be changed into a prime (2222222129) 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 3 ways as a sum of consecutive naturals, for example, 27777737 + ... + 27777816.

Almost surely, 2^2222222120 is an apocalyptic number.

2222222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222222120 is an abundant number, since it is smaller than the sum of its proper divisors (2777777740).

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

2222222120 is a wasteful number, since it uses less digits than its factorization.

2222222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555564 (or 55555560 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2222222120 is about 47140.4509948728. The cubic root of 2222222120 is about 1304.9558603803.

Adding to 2222222120 its reverse (212222222), we get a palindrome (2434444342).

The spelling of 2222222120 in words is "two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty".