1228871271 has 16 divisors (see below), whose sum is σ = 1661736960. Its totient is φ = 807703680.

The previous prime is 1228871263. The next prime is 1228871323. The reversal of 1228871271 is 1721788221.

It is not a de Polignac number, because 1228871271 - 2³ = 1228871263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228871251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55260 + ... + 74238.

It is an arithmetic number, because the mean of its divisors is an integer number (103858560).

Almost surely, 2^1228871271 is an apocalyptic number.

1228871271 is a deficient number, since it is larger than the sum of its proper divisors (432865689).

1228871271 is a wasteful number, since it uses less digits than its factorization.

1228871271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19286.

The product of its digits is 25088, while the sum is 39.

The square root of 1228871271 is about 35055.2602472154. The cubic root of 1228871271 is about 1071.1134276980.

The spelling of 1228871271 in words is "one billion, two hundred twenty-eight million, eight hundred seventy-one thousand, two hundred seventy-one".