11312821271 has 2 divisors, whose sum is σ = 11312821272. Its totient is φ = 11312821270.

The previous prime is 11312821253. The next prime is 11312821339. The reversal of 11312821271 is 17212821311.

It is a happy number.

11312821271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11312821271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11312821171) 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, 5656410635 + 5656410636.

It is an arithmetic number, because the mean of its divisors is an integer number (5656410636).

Almost surely, 2^11312821271 is an apocalyptic number.

11312821271 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312821271 is an equidigital number, since it uses as much as digits as its factorization.

11312821271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 29.

The spelling of 11312821271 in words is "eleven billion, three hundred twelve million, eight hundred twenty-one thousand, two hundred seventy-one".