228162211 has 2 divisors, whose sum is σ = 228162212. Its totient is φ = 228162210.

The previous prime is 228162197. The next prime is 228162223. The reversal of 228162211 is 112261822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228162211 - 2⁹ = 228161699 is a prime.

It is not a weakly prime, because it can be changed into another prime (228162271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114081105 + 114081106.

It is an arithmetic number, because the mean of its divisors is an integer number (114081106).

Almost surely, 2^228162211 is an apocalyptic number.

228162211 is a deficient number, since it is larger than the sum of its proper divisors (1).

228162211 is an equidigital number, since it uses as much as digits as its factorization.

228162211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 25.

The square root of 228162211 is about 15105.0392584727. The cubic root of 228162211 is about 611.0563180980.

The spelling of 228162211 in words is "two hundred twenty-eight million, one hundred sixty-two thousand, two hundred eleven".