2221222222 has 8 divisors (see below), whose sum is σ = 3337115472. Its totient is φ = 1108850400.

The previous prime is 2221222207. The next prime is 2221222229. The reversal of 2221222222 is 2222221222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

2221222222 is a modest number, since divided by 22222 gives 22212 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2221222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221222229) 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, 878779 + ... + 881302.

It is an arithmetic number, because the mean of its divisors is an integer number (417139434).

Almost surely, 2^2221222222 is an apocalyptic number.

2221222222 is a deficient number, since it is larger than the sum of its proper divisors (1115893250).

2221222222 is a wasteful number, since it uses less digits than its factorization.

2221222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760714.

The product of its digits is 512, while the sum is 19.

The square root of 2221222222 is about 47129.8442815166. The cubic root of 2221222222 is about 1304.7601075952.

Adding to 2221222222 its reverse (2222221222), we get a palindrome (4443443444).

The spelling of 2221222222 in words is "two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".