12544225211 has 4 divisors (see below), whose sum is σ = 14336257392. Its totient is φ = 10752193032.

The previous prime is 12544225193. The next prime is 12544225271. The reversal of 12544225211 is 11252244521.

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

It is not a de Polignac number, because 12544225211 - 2¹⁸ = 12543963067 is a prime.

It is a super-2 number, since 2×12544225211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12544225271) 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 in 3 ways as a sum of consecutive naturals, for example, 896016080 + ... + 896016093.

It is an arithmetic number, because the mean of its divisors is an integer number (3584064348).

Almost surely, 2^12544225211 is an apocalyptic number.

12544225211 is a deficient number, since it is larger than the sum of its proper divisors (1792032181).

12544225211 is an equidigital number, since it uses as much as digits as its factorization.

12544225211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792032180.

The product of its digits is 6400, while the sum is 29.

Adding to 12544225211 its reverse (11252244521), we get a palindrome (23796469732).

The spelling of 12544225211 in words is "twelve billion, five hundred forty-four million, two hundred twenty-five thousand, two hundred eleven".