11201112222111 has 24 divisors (see below), whose sum is σ = 18491148542880. Its totient is φ = 6400488923136.

The previous prime is 11201112222031. The next prime is 11201112222169. The reversal of 11201112222111 is 11122221110211.

It is a happy number.

11201112222111 is a `hidden beast` number, since 1 + 120 + 111 + 222 + 211 + 1 = 666.

It is not a de Polignac number, because 11201112222111 - 2⁹ = 11201112221599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201112222511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765631 + ... + 4794623.

It is an arithmetic number, because the mean of its divisors is an integer number (770464522620).

Almost surely, 2^{11201112222111} is an apocalyptic number.

11201112222111 is a deficient number, since it is larger than the sum of its proper divisors (7290036320769).

11201112222111 is a wasteful number, since it uses less digits than its factorization.

11201112222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073135 (or 4073132 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11201112222111 its reverse (11122221110211), we get a palindrome (22323333332322).

The spelling of 11201112222111 in words is "eleven trillion, two hundred one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred eleven".