11121323211 has 96 divisors (see below), whose sum is σ = 18023586048. Its totient is φ = 6577459200.

The previous prime is 11121323209. The next prime is 11121323231. The reversal of 11121323211 is 11232312111.

11121323211 is a `hidden beast` number, since 11 + 121 + 323 + 211 = 666.

It is not a de Polignac number, because 11121323211 - 2¹ = 11121323209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121323231) 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 95 ways as a sum of consecutive naturals, for example, 30303150 + ... + 30303516.

It is an arithmetic number, because the mean of its divisors is an integer number (187745688).

Almost surely, 2^11121323211 is an apocalyptic number.

11121323211 is a deficient number, since it is larger than the sum of its proper divisors (6902262837).

11121323211 is a wasteful number, since it uses less digits than its factorization.

11121323211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 578 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11121323211 its reverse (11232312111), we get a palindrome (22353635322).

The spelling of 11121323211 in words is "eleven billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred eleven".