111222101221102 has 16 divisors (see below), whose sum is σ = 171800336494512. Its totient is φ = 53971797297600.

The previous prime is 111222101221087. The next prime is 111222101221129. The reversal of 111222101221102 is 201122101222111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111222101221102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4118713399 + ... + 4118740402.

It is an arithmetic number, because the mean of its divisors is an integer number (10737521030907).

Almost surely, 2^{111222101221102} is an apocalyptic number.

111222101221102 is a deficient number, since it is larger than the sum of its proper divisors (60578235273410).

111222101221102 is a wasteful number, since it uses less digits than its factorization.

111222101221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237454003.

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

Adding to 111222101221102 its reverse (201122101222111), we get a palindrome (312344202443213).

The spelling of 111222101221102 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, one hundred two".