111111122222112 has 48 divisors (see below), whose sum is σ = 291703772519712. Its totient is φ = 37032332590080.

The previous prime is 111111122222033. The next prime is 111111122222183. The reversal of 111111122222112 is 211222221111111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×111111122222112² (a number of 29 digits) contains 22 as substring.

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

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, 72805689 + ... + 74316152.

It is an arithmetic number, because the mean of its divisors is an integer number (6077161927494).

Almost surely, 2^{111111122222112} is an apocalyptic number.

111111122222112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111122222112 is an abundant number, since it is smaller than the sum of its proper divisors (180592650297600).

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

111111122222112 is a wasteful number, since it uses less digits than its factorization.

111111122222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147129721 (or 147129713 counting only the distinct ones).

The product of its digits is 64, while the sum is 21.

Adding to 111111122222112 its reverse (211222221111111), we get a palindrome (322333343333223).

The spelling of 111111122222112 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".