12507822171211 has 4 divisors (see below), whose sum is σ = 12798701756632. Its totient is φ = 12216942585792.

The previous prime is 12507822171209. The next prime is 12507822171281. The reversal of 12507822171211 is 11217122870521.

It is a happy number.

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 12507822171211 - 2¹ = 12507822171209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12507822171281) 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 in 3 ways as a sum of consecutive naturals, for example, 145439792646 + ... + 145439792731.

It is an arithmetic number, because the mean of its divisors is an integer number (3199675439158).

Almost surely, 2^{12507822171211} is an apocalyptic number.

12507822171211 is a deficient number, since it is larger than the sum of its proper divisors (290879585421).

12507822171211 is an equidigital number, since it uses as much as digits as its factorization.

12507822171211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290879585420.

The product of its (nonzero) digits is 31360, while the sum is 40.

The spelling of 12507822171211 in words is "twelve trillion, five hundred seven billion, eight hundred twenty-two million, one hundred seventy-one thousand, two hundred eleven".