111201020113 has 4 divisors (see below), whose sum is σ = 111256154020. Its totient is φ = 111145886208.

The previous prime is 111201020081. The next prime is 111201020129. The reversal of 111201020113 is 311020102111.

It is a happy number.

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 100721812689 + 10479207424 = 317367^2 + 102368^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201020113 - 2⁵ = 111201020081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111201020093 and 111201020102.

It is not an unprimeable number, because it can be changed into a prime (111201090113) 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 3 ways as a sum of consecutive naturals, for example, 27563928 + ... + 27567961.

It is an arithmetic number, because the mean of its divisors is an integer number (27814038505).

Almost surely, 2^111201020113 is an apocalyptic number.

It is an amenable number.

111201020113 is a deficient number, since it is larger than the sum of its proper divisors (55133907).

111201020113 is an equidigital number, since it uses as much as digits as its factorization.

111201020113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55133906.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111201020113 its reverse (311020102111), we get a palindrome (422221122224).

The spelling of 111201020113 in words is "one hundred eleven billion, two hundred one million, twenty thousand, one hundred thirteen".