11112112221112 has 32 divisors (see below), whose sum is σ = 23813742625920. Its totient is φ = 4761919092960.

The previous prime is 11112112221097. The next prime is 11112112221131. The reversal of 11112112221112 is 21112221121111.

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 11112112221112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7990678 + ... + 9277669.

It is an arithmetic number, because the mean of its divisors is an integer number (744179457060).

Almost surely, 2^{11112112221112} is an apocalyptic number.

It is an amenable number.

11112112221112 is an abundant number, since it is smaller than the sum of its proper divisors (12701630404808).

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

11112112221112 is a wasteful number, since it uses less digits than its factorization.

11112112221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17279851 (or 17279847 counting only the distinct ones).

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

Adding to 11112112221112 its reverse (21112221121111), we get a palindrome (32224333342223).

The spelling of 11112112221112 in words is "eleven trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twelve".