111111102100201 has 12 divisors (see below), whose sum is σ = 129257652403152. Its totient is φ = 95233694310888.

The previous prime is 111111102100183. The next prime is 111111102100211. The reversal of 111111102100201 is 102001201111111.

It is not a de Polignac number, because 111111102100201 - 2²¹ = 111111100003049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111111102100211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51226735 + ... + 53351668.

It is an arithmetic number, because the mean of its divisors is an integer number (10771471033596).

Almost surely, 2^{111111102100201} is an apocalyptic number.

It is an amenable number.

111111102100201 is a deficient number, since it is larger than the sum of its proper divisors (18146550302951).

111111102100201 is a wasteful number, since it uses less digits than its factorization.

111111102100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104600100 (or 104600093 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111111102100201 its reverse (102001201111111), we get a palindrome (213112303211312).

The spelling of 111111102100201 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred two million, one hundred thousand, two hundred one".