11121111112112 has 10 divisors (see below), whose sum is σ = 21547152779748. Its totient is φ = 5560555556048.

The previous prime is 11121111112087. The next prime is 11121111112123. The reversal of 11121111112112 is 21121111112111.

It is a happy number.

It is a super-2 number, since 2×11121111112112² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347534722238 + ... + 347534722269.

Almost surely, 2^{11121111112112} is an apocalyptic number.

It is an amenable number.

11121111112112 is a deficient number, since it is larger than the sum of its proper divisors (10426041667636).

11121111112112 is an equidigital number, since it uses as much as digits as its factorization.

11121111112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695069444515 (or 695069444509 counting only the distinct ones).

The product of its digits is 8, while the sum is 17.

Adding to 11121111112112 its reverse (21121111112111), we get a palindrome (32242222224223).

Subtracting 11121111112112 from its reverse (21121111112111), we obtain a palindrome (9999999999999).

The spelling of 11121111112112 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, one hundred twelve".