22111112011 has 4 divisors (see below), whose sum is σ = 22112732800. Its totient is φ = 22109491224.

The previous prime is 22111111969. The next prime is 22111112039. The reversal of 22111112011 is 11021111122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22111112011 - 2¹¹ = 22111109963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111111982 and 22111112000.

It is not an unprimeable number, because it can be changed into a prime (22111112081) 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 3 ways as a sum of consecutive naturals, for example, 789756 + ... + 817273.

It is an arithmetic number, because the mean of its divisors is an integer number (5528183200).

Almost surely, 2^22111112011 is an apocalyptic number.

22111112011 is a deficient number, since it is larger than the sum of its proper divisors (1620789).

22111112011 is a wasteful number, since it uses less digits than its factorization.

22111112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620788.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22111112011 its reverse (11021111122), we get a palindrome (33132223133).

It can be divided in two parts, 2211111 and 2011, that added together give a palindrome (2213122).

The spelling of 22111112011 in words is "twenty-two billion, one hundred eleven million, one hundred twelve thousand, eleven".