228122271 has 16 divisors (see below), whose sum is σ = 363956320. Its totient is φ = 140382720.

The previous prime is 228122197. The next prime is 228122281. The reversal of 228122271 is 172221822.

It is not a de Polignac number, because 228122271 - 2¹⁰ = 228121247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228122281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324610 + ... + 325311.

It is an arithmetic number, because the mean of its divisors is an integer number (22747270).

Almost surely, 2^228122271 is an apocalyptic number.

228122271 is a deficient number, since it is larger than the sum of its proper divisors (135834049).

228122271 is a wasteful number, since it uses less digits than its factorization.

228122271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649943 (or 649937 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 228122271 is about 15103.7171252642. The cubic root of 228122271 is about 611.0206606982.

The spelling of 228122271 in words is "two hundred twenty-eight million, one hundred twenty-two thousand, two hundred seventy-one".