111143131023101 has 4 divisors (see below), whose sum is σ = 117680962259772. Its totient is φ = 104605299786432.

The previous prime is 111143131023091. The next prime is 111143131023107. The reversal of 111143131023101 is 101320131341111.

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 45426589005625 + 65716542017476 = 6739925^2 + 8106574^2 .

It is a cyclic number.

It is not a de Polignac number, because 111143131023101 - 2⁶ = 111143131023037 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 (111143131023107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3268915618310 + ... + 3268915618343.

It is an arithmetic number, because the mean of its divisors is an integer number (29420240564943).

Almost surely, 2^{111143131023101} is an apocalyptic number.

It is an amenable number.

111143131023101 is a deficient number, since it is larger than the sum of its proper divisors (6537831236671).

111143131023101 is an equidigital number, since it uses as much as digits as its factorization.

111143131023101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6537831236670.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 111143131023101 its reverse (101320131341111), we get a palindrome (212463262364212).

The spelling of 111143131023101 in words is "one hundred eleven trillion, one hundred forty-three billion, one hundred thirty-one million, twenty-three thousand, one hundred one".