111221110102122 has 96 divisors (see below), whose sum is σ = 253366315984080. Its totient is φ = 35225323545600.

The previous prime is 111221110102111. The next prime is 111221110102177. The reversal of 111221110102122 is 221201011122111.

It is a happy number.

111221110102122 is a `hidden beast` number, since 111 + 221 + 110 + 10 + 212 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 107999088692121 + 3222021410001 = 10392261^2 + 1794999^2 .

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 = 111221110102095 and 111221110102104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6414597 + ... + 16235432.

Almost surely, 2^{111221110102122} is an apocalyptic number.

111221110102122 is an abundant number, since it is smaller than the sum of its proper divisors (142145205881958).

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

111221110102122 is a wasteful number, since it uses less digits than its factorization.

111221110102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22650248 (or 22650245 counting only the distinct ones).

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

Adding to 111221110102122 its reverse (221201011122111), we get a palindrome (332422121224233).

The spelling of 111221110102122 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred ten million, one hundred two thousand, one hundred twenty-two".