1228500113 has 2 divisors, whose sum is σ = 1228500114. Its totient is φ = 1228500112.

The previous prime is 1228500109. The next prime is 1228500131. The reversal of 1228500113 is 3110058221.

It is a happy number.

Together with next prime (1228500131) 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., 823001344 + 405498769 = 28688^2 + 20137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228500113 - 2² = 1228500109 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228500913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614250056 + 614250057.

It is an arithmetic number, because the mean of its divisors is an integer number (614250057).

Almost surely, 2^1228500113 is an apocalyptic number.

It is an amenable number.

1228500113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228500113 is an equidigital number, since it uses as much as digits as its factorization.

1228500113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1228500113 is about 35049.9659486283. The cubic root of 1228500113 is about 1071.0055801260.

Adding to 1228500113 its reverse (3110058221), we get a palindrome (4338558334).

The spelling of 1228500113 in words is "one billion, two hundred twenty-eight million, five hundred thousand, one hundred thirteen".