111211220101122 has 24 divisors (see below), whose sum is σ = 240957856443564. Its totient is φ = 37070373947904.

The previous prime is 111211220101063. The next prime is 111211220101127. The reversal of 111211220101122 is 221101022112111.

It is a happy number.

111211220101122 is a `hidden beast` number, since 1 + 11 + 211 + 220 + 101 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 111035934694881 + 175285406241 = 10537359^2 + 418671^2 .

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 = 111211220101095 and 111211220101104.

It is not an unprimeable number, because it can be changed into a prime (111211220101127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26906758 + ... + 30763550.

Almost surely, 2^{111211220101122} is an apocalyptic number.

111211220101122 is an abundant number, since it is smaller than the sum of its proper divisors (129746636342442).

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

111211220101122 is a wasteful number, since it uses less digits than its factorization.

111211220101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458754 (or 5458751 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111211220101122 its reverse (221101022112111), we get a palindrome (332312242213233).

The spelling of 111211220101122 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred twenty-two".