111102221102221 has 24 divisors (see below), whose sum is σ = 113247672036576. Its totient is φ = 108994648775040.

The previous prime is 111102221102207. The next prime is 111102221102251. The reversal of 111102221102221 is 122201122201111.

It is a happy number.

It is not a de Polignac number, because 111102221102221 - 2⁴¹ = 108903197846669 is a prime.

It is a super-2 number, since 2×111102221102221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102221102251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1903612186 + ... + 1903670548.

It is an arithmetic number, because the mean of its divisors is an integer number (4718653001524).

Almost surely, 2^{111102221102221} is an apocalyptic number.

It is an amenable number.

111102221102221 is a deficient number, since it is larger than the sum of its proper divisors (2145450934355).

111102221102221 is an equidigital number, since it uses as much as digits as its factorization.

111102221102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60413 (or 60340 counting only the distinct ones).

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

Adding to 111102221102221 its reverse (122201122201111), we get a palindrome (233303343303332).

The spelling of 111102221102221 in words is "one hundred eleven trillion, one hundred two billion, two hundred twenty-one million, one hundred two thousand, two hundred twenty-one".