1281567135227 has 2 divisors, whose sum is σ = 1281567135228. Its totient is φ = 1281567135226.

The previous prime is 1281567135223. The next prime is 1281567135257. The reversal of 1281567135227 is 7225317651821.

It is a weak prime.

It is an emirp because it is prime and its reverse (7225317651821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1281567135227 - 2² = 1281567135223 is a prime.

It is not a weakly prime, because it can be changed into another prime (1281567135223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640783567613 + 640783567614.

It is an arithmetic number, because the mean of its divisors is an integer number (640783567614).

Almost surely, 2^{1281567135227} is an apocalyptic number.

1281567135227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1281567135227 is an equidigital number, since it uses as much as digits as its factorization.

1281567135227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 50.

The spelling of 1281567135227 in words is "one trillion, two hundred eighty-one billion, five hundred sixty-seven million, one hundred thirty-five thousand, two hundred twenty-seven".