111112020101 has 4 divisors (see below), whose sum is σ = 114943469100. Its totient is φ = 107280571104.

The previous prime is 111112020073. The next prime is 111112020119. The reversal of 111112020101 is 101020211111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91512300100 + 19599720001 = 302510^2 + 139999^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112020101 - 2²² = 111107825797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112020401) 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 3 ways as a sum of consecutive naturals, for example, 1915724456 + ... + 1915724513.

It is an arithmetic number, because the mean of its divisors is an integer number (28735867275).

Almost surely, 2^111112020101 is an apocalyptic number.

It is an amenable number.

111112020101 is a deficient number, since it is larger than the sum of its proper divisors (3831448999).

111112020101 is an equidigital number, since it uses as much as digits as its factorization.

111112020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831448998.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111112020101 its reverse (101020211111), we get a palindrome (212132231212).

The spelling of 111112020101 in words is "one hundred eleven billion, one hundred twelve million, twenty thousand, one hundred one".