111221022122 has 96 divisors (see below), whose sum is σ = 218984974848. Its totient is φ = 41998032384.

The previous prime is 111221022113. The next prime is 111221022131. The reversal of 111221022122 is 221220122111.

It is an interprime number because it is at equal distance from previous prime (111221022113) and next prime (111221022131).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 111221022122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1770068 + ... + 1831824.

It is an arithmetic number, because the mean of its divisors is an integer number (2281093488).

Almost surely, 2^111221022122 is an apocalyptic number.

111221022122 is a deficient number, since it is larger than the sum of its proper divisors (107763952726).

111221022122 is a wasteful number, since it uses less digits than its factorization.

111221022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61860 (or 61853 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111221022122 its reverse (221220122111), we get a palindrome (332441144233).

The spelling of 111221022122 in words is "one hundred eleven billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-two".