12722322531257 has 8 divisors (see below), whose sum is σ = 12993117693696. Its totient is φ = 12451531845952.

The previous prime is 12722322531211. The next prime is 12722322531293. The reversal of 12722322531257 is 75213522322721.

It is a happy number.

12722322531257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12722322531257 - 2²⁰ = 12722321482681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722322591257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4973708 + ... + 7083954.

It is an arithmetic number, because the mean of its divisors is an integer number (1624139711712).

Almost surely, 2^{12722322531257} is an apocalyptic number.

It is an amenable number.

12722322531257 is a deficient number, since it is larger than the sum of its proper divisors (270795162439).

12722322531257 is a wasteful number, since it uses less digits than its factorization.

12722322531257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238567.

The product of its digits is 705600, while the sum is 44.

Adding to 12722322531257 its reverse (75213522322721), we get a palindrome (87935844853978).

The spelling of 12722322531257 in words is "twelve trillion, seven hundred twenty-two billion, three hundred twenty-two million, five hundred thirty-one thousand, two hundred fifty-seven".