2111122222 has 32 divisors (see below), whose sum is σ = 3587263200. Its totient is φ = 922992000.

The previous prime is 2111122219. The next prime is 2111122297. The reversal of 2111122222 is 2222211112.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2111122196 and 2111122205.

It is a congruent number.

It is an unprimeable number.

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, 165472 + ... + 177772.

It is an arithmetic number, because the mean of its divisors is an integer number (112101975).

Almost surely, 2^2111122222 is an apocalyptic number.

2111122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2111122222 is a deficient number, since it is larger than the sum of its proper divisors (1476140978).

2111122222 is a wasteful number, since it uses less digits than its factorization.

2111122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12612.

The product of its digits is 64, while the sum is 16.

The square root of 2111122222 is about 45946.9500837651. The cubic root of 2111122222 is about 1282.8359609621.

Adding to 2111122222 its reverse (2222211112), we get a palindrome (4333333334).

The spelling of 2111122222 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".