111121111011222 has 48 divisors (see below), whose sum is σ = 259289513643888. Its totient is φ = 34190198383680.

The previous prime is 111121111011173. The next prime is 111121111011299. The reversal of 111121111011222 is 222110111121111.

111121111011222 is a `hidden beast` number, since 1 + 111 + 211 + 110 + 11 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111121111011195 and 111121111011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2472697 + ... + 15111467.

It is an arithmetic number, because the mean of its divisors is an integer number (5401864867581).

Almost surely, 2^{111121111011222} is an apocalyptic number.

111121111011222 is an abundant number, since it is smaller than the sum of its proper divisors (148168402632666).

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

111121111011222 is a wasteful number, since it uses less digits than its factorization.

111121111011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12676365 (or 12676362 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 111121111011222 its reverse (222110111121111), we get a palindrome (333231222132333).

The spelling of 111121111011222 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, eleven thousand, two hundred twenty-two".