2111222222 has 16 divisors (see below), whose sum is σ = 3207924000. Its totient is φ = 1041955200.

The previous prime is 2111222203. The next prime is 2111222251. The reversal of 2111222222 is 2222221112.

It is a happy number.

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

2111222222 is a modest number, since divided by 22222 gives 21112 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2111222222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96722 + ... + 116522.

It is an arithmetic number, because the mean of its divisors is an integer number (200495250).

Almost surely, 2^2111222222 is an apocalyptic number.

2111222222 is a deficient number, since it is larger than the sum of its proper divisors (1096701778).

2111222222 is a wasteful number, since it uses less digits than its factorization.

2111222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20491.

The product of its digits is 128, while the sum is 17.

The square root of 2111222222 is about 45948.0382823903. The cubic root of 2111222222 is about 1282.8562158403.

Adding to 2111222222 its reverse (2222221112), we get a palindrome (4333443334).

It can be divided in two parts, 21112 and 22222, that added together give a palindrome (43334).

The spelling of 2111222222 in words is "two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".