111102212101021 has 16 divisors (see below), whose sum is σ = 114290631056448. Its totient is φ = 107958043065600.

The previous prime is 111102212100991. The next prime is 111102212101079. The reversal of 111102212101021 is 120101212201111.

It is a cyclic number.

It is not a de Polignac number, because 111102212101021 - 2⁵ = 111102212100989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111102212100986 and 111102212101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102212105021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 89030901 + ... + 90270181.

It is an arithmetic number, because the mean of its divisors is an integer number (7143164441028).

Almost surely, 2^{111102212101021} is an apocalyptic number.

It is an amenable number.

111102212101021 is a deficient number, since it is larger than the sum of its proper divisors (3188418955427).

111102212101021 is a wasteful number, since it uses less digits than its factorization.

111102212101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257132.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111102212101021 its reverse (120101212201111), we get a palindrome (231203424302132).

The spelling of 111102212101021 in words is "one hundred eleven trillion, one hundred two billion, two hundred twelve million, one hundred one thousand, twenty-one".