11112211222112 has 384 divisors, whose sum is σ = 29545860879360. Its totient is φ = 3973030871040.

The previous prime is 11112211222069. The next prime is 11112211222127. The reversal of 11112211222112 is 21122211221111.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4285463888 + ... + 4285466480.

It is an arithmetic number, because the mean of its divisors is an integer number (76942346040).

Almost surely, 2^{11112211222112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112211222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14772930439680).

11112211222112 is an abundant number, since it is smaller than the sum of its proper divisors (18433649657248).

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

11112211222112 is a wasteful number, since it uses less digits than its factorization.

11112211222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366 (or 3358 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 11112211222112 its reverse (21122211221111), we get a palindrome (32234422443223).

The spelling of 11112211222112 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twelve".