11112112011 has 64 divisors (see below), whose sum is σ = 20090520576. Its totient is φ = 5275584000.

The previous prime is 11112112009. The next prime is 11112112069. The reversal of 11112112011 is 11021121111.

It is not a de Polignac number, because 11112112011 - 2¹ = 11112112009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11112112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 284985 + ... + 321621.

It is an arithmetic number, because the mean of its divisors is an integer number (313914384).

Almost surely, 2^11112112011 is an apocalyptic number.

11112112011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11112112011 is a deficient number, since it is larger than the sum of its proper divisors (8978408565).

11112112011 is a wasteful number, since it uses less digits than its factorization.

11112112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36772.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11112112011 its reverse (11021121111), we get a palindrome (22133233122).

The spelling of 11112112011 in words is "eleven billion, one hundred twelve million, one hundred twelve thousand, eleven".