228122771 has 2 divisors, whose sum is σ = 228122772. Its totient is φ = 228122770.

The previous prime is 228122767. The next prime is 228122773. The reversal of 228122771 is 177221822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228122771 - 2² = 228122767 is a prime.

Together with 228122773, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_12544952 and since 228122771 and 12544952 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (228122773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114061385 + 114061386.

It is an arithmetic number, because the mean of its divisors is an integer number (114061386).

Almost surely, 2^228122771 is an apocalyptic number.

228122771 is a deficient number, since it is larger than the sum of its proper divisors (1).

228122771 is an equidigital number, since it uses as much as digits as its factorization.

228122771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6272, while the sum is 32.

The square root of 228122771 is about 15103.7336774719. The cubic root of 228122771 is about 611.0211071110.

It can be divided in two parts, 2281 and 22771, that added together give a palindrome (25052).

The spelling of 228122771 in words is "two hundred twenty-eight million, one hundred twenty-two thousand, seven hundred seventy-one".