111222111113 has 2 divisors, whose sum is σ = 111222111114. Its totient is φ = 111222111112.

The previous prime is 111222111109. The next prime is 111222111173. The reversal of 111222111113 is 311111222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87546749689 + 23675361424 = 295883^2 + 153868^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222111113 - 2² = 111222111109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111222111091 and 111222111100.

It is not a weakly prime, because it can be changed into another prime (111222111173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611055556 + 55611055557.

It is an arithmetic number, because the mean of its divisors is an integer number (55611055557).

Almost surely, 2^111222111113 is an apocalyptic number.

It is an amenable number.

111222111113 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222111113 is an equidigital number, since it uses as much as digits as its factorization.

111222111113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 17.

Adding to 111222111113 its reverse (311111222111), we get a palindrome (422333333224).

The spelling of 111222111113 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, one hundred thirteen".