1301121271 has 2 divisors, whose sum is σ = 1301121272. Its totient is φ = 1301121270.

The previous prime is 1301121259. The next prime is 1301121331. The reversal of 1301121271 is 1721211031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301121271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301121251) 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, 650560635 + 650560636.

It is an arithmetic number, because the mean of its divisors is an integer number (650560636).

Almost surely, 2^1301121271 is an apocalyptic number.

1301121271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301121271 is an equidigital number, since it uses as much as digits as its factorization.

1301121271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 1301121271 is about 36071.0586343124. The cubic root of 1301121271 is about 1091.7065742211.

The spelling of 1301121271 in words is "one billion, three hundred one million, one hundred twenty-one thousand, two hundred seventy-one".