111132310021 has 2 divisors, whose sum is σ = 111132310022. Its totient is φ = 111132310020.

The previous prime is 111132310007. The next prime is 111132310043. The reversal of 111132310021 is 120013231111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58789276225 + 52343033796 = 242465^2 + 228786^2 .

It is a cyclic number.

It is not a de Polignac number, because 111132310021 - 2¹³ = 111132301829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111132309977 and 111132310004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111132310321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55566155010 + 55566155011.

It is an arithmetic number, because the mean of its divisors is an integer number (55566155011).

Almost surely, 2^111132310021 is an apocalyptic number.

It is an amenable number.

111132310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111132310021 is an equidigital number, since it uses as much as digits as its factorization.

111132310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111132310021 its reverse (120013231111), we get a palindrome (231145541132).

The spelling of 111132310021 in words is "one hundred eleven billion, one hundred thirty-two million, three hundred ten thousand, twenty-one".