1112221613 has 2 divisors, whose sum is σ = 1112221614. Its totient is φ = 1112221612.

The previous prime is 1112221609. The next prime is 1112221631. The reversal of 1112221613 is 3161222111.

Together with next prime (1112221631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077021124 + 35200489 = 32818^2 + 5933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112221613 - 2² = 1112221609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112821613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556110806 + 556110807.

It is an arithmetic number, because the mean of its divisors is an integer number (556110807).

Almost surely, 2^1112221613 is an apocalyptic number.

It is an amenable number.

1112221613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112221613 is an equidigital number, since it uses as much as digits as its factorization.

1112221613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

The square root of 1112221613 is about 33349.9867016465. The cubic root of 1112221613 is about 1036.0891125153.

Adding to 1112221613 its reverse (3161222111), we get a palindrome (4273443724).

The spelling of 1112221613 in words is "one billion, one hundred twelve million, two hundred twenty-one thousand, six hundred thirteen".