228121259 has 2 divisors, whose sum is σ = 228121260. Its totient is φ = 228121258.

The previous prime is 228121247. The next prime is 228121297. The reversal of 228121259 is 952121822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228121259 - 2¹² = 228117163 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228171259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114060629 + 114060630.

It is an arithmetic number, because the mean of its divisors is an integer number (114060630).

Almost surely, 2^228121259 is an apocalyptic number.

228121259 is a deficient number, since it is larger than the sum of its proper divisors (1).

228121259 is an equidigital number, since it uses as much as digits as its factorization.

228121259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 228121259 is about 15103.6836235403. The cubic root of 228121259 is about 611.0197571567.

The spelling of 228121259 in words is "two hundred twenty-eight million, one hundred twenty-one thousand, two hundred fifty-nine".