22111111211 has 8 divisors (see below), whose sum is σ = 25270844160. Its totient is φ = 18951628968.

The previous prime is 22111111159. The next prime is 22111111247. The reversal of 22111111211 is 11211111122.

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 22111111211 - 2³⁴ = 4931242027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111111811) 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, 199370 + ... + 289776.

It is an arithmetic number, because the mean of its divisors is an integer number (3158855520).

Almost surely, 2^22111111211 is an apocalyptic number.

22111111211 is a deficient number, since it is larger than the sum of its proper divisors (3159732949).

22111111211 is an equidigital number, since it uses as much as digits as its factorization.

22111111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125353.

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

Adding to 22111111211 its reverse (11211111122), we get a palindrome (33322222333).

It can be divided in two parts, 2211111121 and 1, that added together give a palindrome (2211111122).

The spelling of 22111111211 in words is "twenty-two billion, one hundred eleven million, one hundred eleven thousand, two hundred eleven".