11112220111112 has 16 divisors (see below), whose sum is σ = 22061025220860. Its totient is φ = 5229280052224.

The previous prime is 11112220111081. The next prime is 11112220111117. The reversal of 11112220111112 is 21111102221111.

It can be written as a sum of positive squares in 2 ways, for example, as 10035552395236 + 1076667715876 = 3167894^2 + 1037626^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (11112220111117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40853750273 + ... + 40853750544.

Almost surely, 2^{11112220111112} is an apocalyptic number.

It is an amenable number.

11112220111112 is a deficient number, since it is larger than the sum of its proper divisors (10948805109748).

11112220111112 is a wasteful number, since it uses less digits than its factorization.

11112220111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81707500840 (or 81707500836 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11112220111112 its reverse (21111102221111), we get a palindrome (32223322332223).

The spelling of 11112220111112 in words is "eleven trillion, one hundred twelve billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".