11220111111112 has 8 divisors (see below), whose sum is σ = 21037708333350. Its totient is φ = 5610055555552.

The previous prime is 11220111111109. The next prime is 11220111111151. The reversal of 11220111111112 is 21111111102211.

It can be written as a sum of positive squares in only one way, i.e., 9376419664836 + 1843691446276 = 3062094^2 + 1357826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701256944437 + ... + 701256944452.

Almost surely, 2^{11220111111112} is an apocalyptic number.

It is an amenable number.

11220111111112 is a deficient number, since it is larger than the sum of its proper divisors (9817597222238).

11220111111112 is a wasteful number, since it uses less digits than its factorization.

11220111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402513888895 (or 1402513888891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11220111111112 its reverse (21111111102211), we get a palindrome (32331222213323).

The spelling of 11220111111112 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".