2222111111 has 8 divisors (see below), whose sum is σ = 2463861648. Its totient is φ = 1986984000.

The previous prime is 2222111107. The next prime is 2222111113. The reversal of 2222111111 is 1111112222.

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

It is a cyclic number.

It is not a de Polignac number, because 2222111111 - 2² = 2222111107 is a prime.

It is a Duffinian number.

2222111111 is a modest number, since divided by 111111 gives 2222 as remainder.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222111113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655150 + ... + 1656491.

It is an arithmetic number, because the mean of its divisors is an integer number (307982706).

Almost surely, 2^2222111111 is an apocalyptic number.

2222111111 is a deficient number, since it is larger than the sum of its proper divisors (241750537).

2222111111 is a wasteful number, since it uses less digits than its factorization.

2222111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311713.

The product of its digits is 16, while the sum is 14.

The square root of 2222111111 is about 47139.2735518909. The cubic root of 2222111111 is about 1304.9341307407.

Adding to 2222111111 its reverse (1111112222), we get a palindrome (3333223333).

It can be divided in two parts, 2222111 and 111, that added together give a palindrome (2222222).

The spelling of 2222111111 in words is "two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred eleven".