11112211211 has 8 divisors (see below), whose sum is σ = 11785265280. Its totient is φ = 10441312128.

The previous prime is 11112211189. The next prime is 11112211219. The reversal of 11112211211 is 11211221111.

11112211211 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 11112211211 - 2¹⁸ = 11111949067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112211219) 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, 528116 + ... + 548753.

It is an arithmetic number, because the mean of its divisors is an integer number (1473158160).

Almost surely, 2^11112211211 is an apocalyptic number.

11112211211 is a deficient number, since it is larger than the sum of its proper divisors (673054069).

11112211211 is a wasteful number, since it uses less digits than its factorization.

11112211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077493.

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

Adding to 11112211211 its reverse (11211221111), we get a palindrome (22323432322).

The spelling of 11112211211 in words is "eleven billion, one hundred twelve million, two hundred eleven thousand, two hundred eleven".