2212221111 has 16 divisors (see below), whose sum is σ = 2982336000. Its totient is φ = 1458550368.

The previous prime is 2212221073. The next prime is 2212221131. The reversal of 2212221111 is 1111222122.

It is not a de Polignac number, because 2212221111 - 2¹¹ = 2212219063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212221131) 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, 88605 + ... + 110793.

It is an arithmetic number, because the mean of its divisors is an integer number (186396000).

Almost surely, 2^2212221111 is an apocalyptic number.

2212221111 is a deficient number, since it is larger than the sum of its proper divisors (770114889).

2212221111 is a wasteful number, since it uses less digits than its factorization.

2212221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22558.

The product of its digits is 32, while the sum is 15.

The square root of 2212221111 is about 47034.2546555168. The cubic root of 2212221111 is about 1302.9952848864.

Adding to 2212221111 its reverse (1111222122), we get a palindrome (3323443233).

The spelling of 2212221111 in words is "two billion, two hundred twelve million, two hundred twenty-one thousand, one hundred eleven".