228112117 has 2 divisors, whose sum is σ = 228112118. Its totient is φ = 228112116.

The previous prime is 228112111. The next prime is 228112121. The reversal of 228112117 is 711211822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134235396 + 93876721 = 11586^2 + 9689^2 .

It is a cyclic number.

It is not a de Polignac number, because 228112117 - 2²³ = 219723509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228112091 and 228112100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114056058 + 114056059.

It is an arithmetic number, because the mean of its divisors is an integer number (114056059).

Almost surely, 2^228112117 is an apocalyptic number.

It is an amenable number.

228112117 is a deficient number, since it is larger than the sum of its proper divisors (1).

228112117 is an equidigital number, since it uses as much as digits as its factorization.

228112117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 25.

The square root of 228112117 is about 15103.3809791053. The cubic root of 228112117 is about 611.0115948059.

Adding to 228112117 its reverse (711211822), we get a palindrome (939323939).

The spelling of 228112117 in words is "two hundred twenty-eight million, one hundred twelve thousand, one hundred seventeen".