11212112111 has 8 divisors (see below), whose sum is σ = 11325286848. Its totient is φ = 11098980000.

The previous prime is 11212112101. The next prime is 11212112143. The reversal of 11212112111 is 11121121211.

11212112111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212112111 - 2¹⁰ = 11212111087 is a prime.

It is a super-2 number, since 2×11212112111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212112101) 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 7 ways as a sum of consecutive naturals, for example, 942581 + ... + 954401.

It is an arithmetic number, because the mean of its divisors is an integer number (1415660856).

Almost surely, 2^11212112111 is an apocalyptic number.

11212112111 is a deficient number, since it is larger than the sum of its proper divisors (113174737).

11212112111 is a wasteful number, since it uses less digits than its factorization.

11212112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21313.

The product of its digits is 8, while the sum is 14.

Adding to 11212112111 its reverse (11121121211), we get a palindrome (22333233322).

The spelling of 11212112111 in words is "eleven billion, two hundred twelve million, one hundred twelve thousand, one hundred eleven".