1272252852811 has 4 divisors (see below), whose sum is σ = 1273056551712. Its totient is φ = 1271449153912.

The previous prime is 1272252852713. The next prime is 1272252852833. The reversal of 1272252852811 is 1182582522721.

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 1272252852811 - 2¹¹ = 1272252850763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272252852881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401847076 + ... + 401850241.

It is an arithmetic number, because the mean of its divisors is an integer number (318264137928).

Almost surely, 2^{1272252852811} is an apocalyptic number.

1272252852811 is a deficient number, since it is larger than the sum of its proper divisors (803698901).

1272252852811 is an equidigital number, since it uses as much as digits as its factorization.

1272252852811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803698900.

The product of its digits is 358400, while the sum is 46.

The spelling of 1272252852811 in words is "one trillion, two hundred seventy-two billion, two hundred fifty-two million, eight hundred fifty-two thousand, eight hundred eleven".