11122131111 has 16 divisors (see below), whose sum is σ = 18251702784. Its totient is φ = 5866618464.

The previous prime is 11122131109. The next prime is 11122131149. The reversal of 11122131111 is 11113122111.

11122131111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11122131111 - 2¹ = 11122131109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122131101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20369931 + ... + 20370476.

It is an arithmetic number, because the mean of its divisors is an integer number (1140731424).

Almost surely, 2^11122131111 is an apocalyptic number.

11122131111 is a deficient number, since it is larger than the sum of its proper divisors (7129571673).

11122131111 is a wasteful number, since it uses less digits than its factorization.

11122131111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40740430.

The product of its digits is 12, while the sum is 15.

Adding to 11122131111 its reverse (11113122111), we get a palindrome (22235253222).

The spelling of 11122131111 in words is "eleven billion, one hundred twenty-two million, one hundred thirty-one thousand, one hundred eleven".