1121871271 has 2 divisors, whose sum is σ = 1121871272. Its totient is φ = 1121871270.

The previous prime is 1121871263. The next prime is 1121871281. The reversal of 1121871271 is 1721781211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121871271 - 2³ = 1121871263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121871211) 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 as a sum of consecutive naturals, namely, 560935635 + 560935636.

It is an arithmetic number, because the mean of its divisors is an integer number (560935636).

Almost surely, 2^1121871271 is an apocalyptic number.

1121871271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121871271 is an equidigital number, since it uses as much as digits as its factorization.

1121871271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 31.

The square root of 1121871271 is about 33494.3468513718. The cubic root of 1121871271 is about 1039.0768654441.

The spelling of 1121871271 in words is "one billion, one hundred twenty-one million, eight hundred seventy-one thousand, two hundred seventy-one".