11223122211 has 32 divisors (see below), whose sum is σ = 19031961600. Its totient is φ = 6403138560.

The previous prime is 11223122191. The next prime is 11223122213. The reversal of 11223122211 is 11222132211.

It is not a de Polignac number, because 11223122211 - 2¹⁵ = 11223089443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11223122213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74830 + ... + 167468.

It is an arithmetic number, because the mean of its divisors is an integer number (594748800).

Almost surely, 2^11223122211 is an apocalyptic number.

11223122211 is a deficient number, since it is larger than the sum of its proper divisors (7808839389).

11223122211 is an equidigital number, since it uses as much as digits as its factorization.

11223122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93296 (or 93290 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11223122211 its reverse (11222132211), we get a palindrome (22445254422).

The spelling of 11223122211 in words is "eleven billion, two hundred twenty-three million, one hundred twenty-two thousand, two hundred eleven".