11111222211112 has 16 divisors (see below), whose sum is σ = 22059044095860. Its totient is φ = 5228810452224.

The previous prime is 11111222211031. The next prime is 11111222211149. The reversal of 11111222211112 is 21111222211111.

It can be written as a sum of positive squares in 2 ways, for example, as 10558379401956 + 552842809156 = 3249366^2 + 743534^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11111222211112.

It is an unprimeable number.

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, 40850081523 + ... + 40850081794.

Almost surely, 2^{11111222211112} is an apocalyptic number.

It is an amenable number.

11111222211112 is a deficient number, since it is larger than the sum of its proper divisors (10947821884748).

11111222211112 is a wasteful number, since it uses less digits than its factorization.

11111222211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81700163340 (or 81700163336 counting only the distinct ones).

The product of its digits is 32, while the sum is 19.

Adding to 11111222211112 its reverse (21111222211111), we get a palindrome (32222444422223).

Subtracting 11111222211112 from its reverse (21111222211111), we obtain a palindrome (9999999999999).

The spelling of 11111222211112 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twelve".