2221111222 has 16 divisors (see below), whose sum is σ = 3636241344. Its totient is φ = 1009125000.

The previous prime is 2221111201. The next prime is 2221111241.

It is a happy number.

2221111222 is nontrivially palindromic in base 10.

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

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2221111196 and 2221111205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27097 + ... + 71947.

It is an arithmetic number, because the mean of its divisors is an integer number (227265084).

Almost surely, 2^2221111222 is an apocalyptic number.

2221111222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2221111222 is a deficient number, since it is larger than the sum of its proper divisors (1415130122).

2221111222 is a wasteful number, since it uses less digits than its factorization.

2221111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47115.

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

The square root of 2221111222 is about 47128.6666690243. Note that the first 5 decimals coincide. The cubic root of 2221111222 is about 1304.7383731970.

It can be divided in two parts, 22211 and 11222, that added together give a palindrome (33433).

The spelling of 2221111222 in words is "two billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-two".