111130320221 has 2 divisors, whose sum is σ = 111130320222. Its totient is φ = 111130320220.

The previous prime is 111130320151. The next prime is 111130320247. The reversal of 111130320221 is 122023031111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102755508025 + 8374812196 = 320555^2 + 91514^2 .

It is a cyclic number.

It is not a de Polignac number, because 111130320221 - 2¹⁸ = 111130058077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111130320221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111130320251) 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 as a sum of consecutive naturals, namely, 55565160110 + 55565160111.

It is an arithmetic number, because the mean of its divisors is an integer number (55565160111).

Almost surely, 2^111130320221 is an apocalyptic number.

It is an amenable number.

111130320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111130320221 is an equidigital number, since it uses as much as digits as its factorization.

111130320221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111130320221 its reverse (122023031111), we get a palindrome (233153351332).

The spelling of 111130320221 in words is "one hundred eleven billion, one hundred thirty million, three hundred twenty thousand, two hundred twenty-one".