111222221242 has 32 divisors (see below), whose sum is σ = 192121917120. Its totient is φ = 47758993920.

The previous prime is 111222221221. The next prime is 111222221267. The reversal of 111222221242 is 242122222111.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229333 + ... + 524440.

It is an arithmetic number, because the mean of its divisors is an integer number (6003809910).

Almost surely, 2^111222221242 is an apocalyptic number.

111222221242 is a deficient number, since it is larger than the sum of its proper divisors (80899695878).

111222221242 is a wasteful number, since it uses less digits than its factorization.

111222221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754158.

The product of its digits is 512, while the sum is 22.

Adding to 111222221242 its reverse (242122222111), we get a palindrome (353344443353).

The spelling of 111222221242 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred forty-two".