111221212100122 has 8 divisors (see below), whose sum is σ = 166862134688256. Its totient is φ = 55600500537372.

The previous prime is 111221212100099. The next prime is 111221212100189. The reversal of 111221212100122 is 221001212122111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111221212100122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5052742588 + ... + 5052764599.

It is an arithmetic number, because the mean of its divisors is an integer number (20857766836032).

Almost surely, 2^{111221212100122} is an apocalyptic number.

111221212100122 is a deficient number, since it is larger than the sum of its proper divisors (55640922588134).

111221212100122 is a wasteful number, since it uses less digits than its factorization.

111221212100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105512692.

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

Adding to 111221212100122 its reverse (221001212122111), we get a palindrome (332222424222233).

The spelling of 111221212100122 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, one hundred twenty-two".