111020102021105 has 16 divisors (see below), whose sum is σ = 133455147837264. Its totient is φ = 88662078965760.

The previous prime is 111020102021077. The next prime is 111020102021107. The reversal of 111020102021105 is 501120201020111.

It can be written as a sum of positive squares in 8 ways, for example, as 8895353970064 + 102124748051041 = 2982508^2 + 10105679^2 .

It is not a de Polignac number, because 111020102021105 - 2⁶ = 111020102021041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020102021107) 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, 62038037 + ... + 63802493.

It is an arithmetic number, because the mean of its divisors is an integer number (8340946739829).

Almost surely, 2^{111020102021105} is an apocalyptic number.

It is an amenable number.

111020102021105 is a deficient number, since it is larger than the sum of its proper divisors (22435045816159).

111020102021105 is a wasteful number, since it uses less digits than its factorization.

111020102021105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786276.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 111020102021105 its reverse (501120201020111), we get a palindrome (612140303041216).

The spelling of 111020102021105 in words is "one hundred eleven trillion, twenty billion, one hundred two million, twenty-one thousand, one hundred five".