11122212211 has 16 divisors (see below), whose sum is σ = 12818787840. Its totient is φ = 9554718880.

The previous prime is 11122212203. The next prime is 11122212223. The reversal of 11122212211 is 11221222111.

It is a cyclic number.

It is not a de Polignac number, because 11122212211 - 2³ = 11122212203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122212251) 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 15 ways as a sum of consecutive naturals, for example, 355921 + ... + 385906.

It is an arithmetic number, because the mean of its divisors is an integer number (801174240).

Almost surely, 2^11122212211 is an apocalyptic number.

11122212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11122212211 is a deficient number, since it is larger than the sum of its proper divisors (1696575629).

11122212211 is a wasteful number, since it uses less digits than its factorization.

11122212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741914.

The product of its digits is 32, while the sum is 16.

Adding to 11122212211 its reverse (11221222111), we get a palindrome (22343434322).

The spelling of 11122212211 in words is "eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eleven".