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1121871271 is a prime number
BaseRepresentation
bin100001011011110…
…0110010110100111
32220011222222001211
41002313212112213
54244144340041
6303153332251
736541514503
oct10267462647
92804888054
101121871271
115262a3544
12273867087
1314b56aa71
14a8dd3303
1568756481
hex42de65a7

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, 21121871271 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".