12225710681 has 4 divisors (see below), whose sum is σ = 12556135332. Its totient is φ = 11895286032.

The previous prime is 12225710659. The next prime is 12225710689. The reversal of 12225710681 is 18601752221.

12225710681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9362497600 + 2863213081 = 96760^2 + 53509^2 .

It is a cyclic number.

It is not a de Polignac number, because 12225710681 - 2²⁶ = 12158601817 is a prime.

It is a super-2 number, since 2×12225710681² (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 (12225710689) 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, 165212270 + ... + 165212343.

It is an arithmetic number, because the mean of its divisors is an integer number (3139033833).

Almost surely, 2^12225710681 is an apocalyptic number.

It is an amenable number.

12225710681 is a deficient number, since it is larger than the sum of its proper divisors (330424651).

12225710681 is an equidigital number, since it uses as much as digits as its factorization.

12225710681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330424650.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 12225710681 in words is "twelve billion, two hundred twenty-five million, seven hundred ten thousand, six hundred eighty-one".