2222221222 has 48 divisors (see below), whose sum is σ = 3896670240. Its totient is φ = 947122176.

The previous prime is 2222221219. The next prime is 2222221223. The reversal of 2222221222 is 2221222222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2222221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222221223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220518 + ... + 230374.

It is an arithmetic number, because the mean of its divisors is an integer number (81180630).

Almost surely, 2^2222221222 is an apocalyptic number.

2222221222 is a deficient number, since it is larger than the sum of its proper divisors (1674449018).

2222221222 is a wasteful number, since it uses less digits than its factorization.

2222221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937 (or 9924 counting only the distinct ones).

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

The square root of 2222221222 is about 47140.4414701432. The cubic root of 2222221222 is about 1304.9556846027.

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

The spelling of 2222221222 in words is "two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".