111221022110122 has 4 divisors (see below), whose sum is σ = 166831533165186. Its totient is φ = 55610511055060.

The previous prime is 111221022110119. The next prime is 111221022110153. The reversal of 111221022110122 is 221011220122111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 110150461477081 + 1070560633041 = 10495259^2 + 1034679^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111221022110122.

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 as a sum of consecutive naturals, namely, 27805255527529 + ... + 27805255527532.

Almost surely, 2^{111221022110122} is an apocalyptic number.

111221022110122 is a deficient number, since it is larger than the sum of its proper divisors (55610511055064).

111221022110122 is an equidigital number, since it uses as much as digits as its factorization.

111221022110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55610511055063.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111221022110122 its reverse (221011220122111), we get a palindrome (332232242232233).

The spelling of 111221022110122 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty-two million, one hundred ten thousand, one hundred twenty-two".