11112222122112 has 64 divisors (see below), whose sum is σ = 29519831309760. Its totient is φ = 3703698662400.

The previous prime is 11112222122101. The next prime is 11112222122117. The reversal of 11112222122112 is 21122122221111.

It is a tau number, because it is divible by the number of its divisors (64).

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 not an unprimeable number, because it can be changed into a prime (11112222122117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2340613 + ... + 5263355.

It is an arithmetic number, because the mean of its divisors is an integer number (461247364215).

Almost surely, 2^{11112222122112} is an apocalyptic number.

11112222122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112222122112 is an abundant number, since it is smaller than the sum of its proper divisors (18407609187648).

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

11112222122112 is an equidigital number, since it uses as much as digits as its factorization.

11112222122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932661 (or 2932649 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 11112222122112 its reverse (21122122221111), we get a palindrome (32234344343223).

The spelling of 11112222122112 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twelve".