2212111111 has 16 divisors (see below), whose sum is σ = 2678759424. Its totient is φ = 1783281024.

The previous prime is 2212111079. The next prime is 2212111133. The reversal of 2212111111 is 1111112122.

It is a happy number.

It is not a de Polignac number, because 2212111111 - 2⁵ = 2212111079 is a prime.

It is a Duffinian number.

2212111111 is a modest number, since divided by 111111 gives 2212 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2212111091 and 2212111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212111151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182506 + ... + 194248.

It is an arithmetic number, because the mean of its divisors is an integer number (167422464).

Almost surely, 2^2212111111 is an apocalyptic number.

2212111111 is a deficient number, since it is larger than the sum of its proper divisors (466648313).

2212111111 is a wasteful number, since it uses less digits than its factorization.

2212111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13350.

The product of its digits is 8, while the sum is 13.

The square root of 2212111111 is about 47033.0852804704. The cubic root of 2212111111 is about 1302.9736879107.

Adding to 2212111111 its reverse (1111112122), we get a palindrome (3323223233).

The spelling of 2212111111 in words is "two billion, two hundred twelve million, one hundred eleven thousand, one hundred eleven".