228215227 has 2 divisors, whose sum is σ = 228215228. Its totient is φ = 228215226.

The previous prime is 228215219. The next prime is 228215237. The reversal of 228215227 is 722512822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228215227 - 2³ = 228215219 is a prime.

It is not a weakly prime, because it can be changed into another prime (228215237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114107613 + 114107614.

It is an arithmetic number, because the mean of its divisors is an integer number (114107614).

Almost surely, 2^228215227 is an apocalyptic number.

228215227 is a deficient number, since it is larger than the sum of its proper divisors (1).

228215227 is an equidigital number, since it uses as much as digits as its factorization.

228215227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 31.

The square root of 228215227 is about 15106.7940675711. The cubic root of 228215227 is about 611.1036429856.

The spelling of 228215227 in words is "two hundred twenty-eight million, two hundred fifteen thousand, two hundred twenty-seven".