111102100122221 has 16 divisors (see below), whose sum is σ = 119998085014080. Its totient is φ = 102256286764800.

The previous prime is 111102100122203. The next prime is 111102100122317. The reversal of 111102100122221 is 122221001201111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111102100122221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111102100122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102100122421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7637306 + ... + 16749108.

It is an arithmetic number, because the mean of its divisors is an integer number (7499880313380).

Almost surely, 2^{111102100122221} is an apocalyptic number.

It is an amenable number.

111102100122221 is a deficient number, since it is larger than the sum of its proper divisors (8895984891859).

111102100122221 is a wasteful number, since it uses less digits than its factorization.

111102100122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114556.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111102100122221 its reverse (122221001201111), we get a palindrome (233323101323332).

The spelling of 111102100122221 in words is "one hundred eleven trillion, one hundred two billion, one hundred million, one hundred twenty-two thousand, two hundred twenty-one".