1273122327571 has 4 divisors (see below), whose sum is σ = 1328475472272. Its totient is φ = 1217769182872.

The previous prime is 1273122327563. The next prime is 1273122327583. The reversal of 1273122327571 is 1757232213721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1273122327571 - 2³ = 1273122327563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273122387571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27676572316 + ... + 27676572361.

It is an arithmetic number, because the mean of its divisors is an integer number (332118868068).

Almost surely, 2^{1273122327571} is an apocalyptic number.

1273122327571 is a deficient number, since it is larger than the sum of its proper divisors (55353144701).

1273122327571 is an equidigital number, since it uses as much as digits as its factorization.

1273122327571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55353144700.

The product of its digits is 246960, while the sum is 43.

The spelling of 1273122327571 in words is "one trillion, two hundred seventy-three billion, one hundred twenty-two million, three hundred twenty-seven thousand, five hundred seventy-one".