111230221013 has 2 divisors, whose sum is σ = 111230221014. Its totient is φ = 111230221012.

The previous prime is 111230220989. The next prime is 111230221049. The reversal of 111230221013 is 310122032111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64220175889 + 47010045124 = 253417^2 + 216818^2 .

It is a cyclic number.

It is not a de Polignac number, because 111230221013 - 2⁸ = 111230220757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111230220982 and 111230221000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111230226013) 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, 55615110506 + 55615110507.

It is an arithmetic number, because the mean of its divisors is an integer number (55615110507).

Almost surely, 2^111230221013 is an apocalyptic number.

It is an amenable number.

111230221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111230221013 is an equidigital number, since it uses as much as digits as its factorization.

111230221013 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 111230221013 its reverse (310122032111), we get a palindrome (421352253124).

The spelling of 111230221013 in words is "one hundred eleven billion, two hundred thirty million, two hundred twenty-one thousand, thirteen".