12722175251 has 4 divisors (see below), whose sum is σ = 12937805400. Its totient is φ = 12506545104.

The previous prime is 12722175227. The next prime is 12722175253. The reversal of 12722175251 is 15257122721.

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 12722175251 - 2¹⁸ = 12721913107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722175253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107814986 + ... + 107815103.

It is an arithmetic number, because the mean of its divisors is an integer number (3234451350).

Almost surely, 2^12722175251 is an apocalyptic number.

12722175251 is a deficient number, since it is larger than the sum of its proper divisors (215630149).

12722175251 is an equidigital number, since it uses as much as digits as its factorization.

12722175251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215630148.

The product of its digits is 19600, while the sum is 35.

Adding to 12722175251 its reverse (15257122721), we get a palindrome (27979297972).

The spelling of 12722175251 in words is "twelve billion, seven hundred twenty-two million, one hundred seventy-five thousand, two hundred fifty-one".