11101112211111 has 32 divisors (see below), whose sum is σ = 16639321520640. Its totient is φ = 6531991576704.

The previous prime is 11101112211109. The next prime is 11101112211143. The reversal of 11101112211111 is 11111221110111.

It is a happy number.

It is not a de Polignac number, because 11101112211111 - 2¹ = 11101112211109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101112211011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89760 + ... + 4712778.

It is an arithmetic number, because the mean of its divisors is an integer number (519978797520).

Almost surely, 2^{11101112211111} is an apocalyptic number.

11101112211111 is a deficient number, since it is larger than the sum of its proper divisors (5538209309529).

11101112211111 is a wasteful number, since it uses less digits than its factorization.

11101112211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625735.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 11101112211111 its reverse (11111221110111), we get a palindrome (22212333321222).

The spelling of 11101112211111 in words is "eleven trillion, one hundred one billion, one hundred twelve million, two hundred eleven thousand, one hundred eleven".