11112212112 has 80 divisors (see below), whose sum is σ = 31443344640. Its totient is φ = 3365963776.

The previous prime is 11112212101. The next prime is 11112212123. The reversal of 11112212112 is 21121221111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11112212101) and next prime (11112212123).

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 a junction number, because it is equal to n+sod(n) for n = 11112212091 and 11112212100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211128 + ... + 258455.

It is an arithmetic number, because the mean of its divisors is an integer number (393041808).

Almost surely, 2^11112212112 is an apocalyptic number.

11112212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112212112 is an abundant number, since it is smaller than the sum of its proper divisors (20331132528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112212112 is a wasteful number, since it uses less digits than its factorization.

11112212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469640 (or 469634 counting only the distinct ones).

The product of its digits is 16, while the sum is 15.

Adding to 11112212112 its reverse (21121221111), we get a palindrome (32233433223).

The spelling of 11112212112 in words is "eleven billion, one hundred twelve million, two hundred twelve thousand, one hundred twelve".