111210221101 has 24 divisors (see below), whose sum is σ = 129689318400. Its totient is φ = 95085900000.

The previous prime is 111210221093. The next prime is 111210221113. The reversal of 111210221101 is 101122012111.

It is a happy number.

It is not a de Polignac number, because 111210221101 - 2³ = 111210221093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57000676 + ... + 57002626.

It is an arithmetic number, because the mean of its divisors is an integer number (5403721600).

Almost surely, 2^111210221101 is an apocalyptic number.

It is an amenable number.

111210221101 is a deficient number, since it is larger than the sum of its proper divisors (18479097299).

111210221101 is a wasteful number, since it uses less digits than its factorization.

111210221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4258 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111210221101 its reverse (101122012111), we get a palindrome (212332233212).

The spelling of 111210221101 in words is "one hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, one hundred one".