12702221506571 has 4 divisors (see below), whose sum is σ = 12702264313752. Its totient is φ = 12702178699392.

The previous prime is 12702221506549. The next prime is 12702221506621. The reversal of 12702221506571 is 17560512220721.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12702221506571 is a prime.

It is a super-2 number, since 2×12702221506571² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12702221502571) 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, 20955365 + ... + 21552998.

It is an arithmetic number, because the mean of its divisors is an integer number (3175566078438).

Almost surely, 2^{12702221506571} is an apocalyptic number.

12702221506571 is a deficient number, since it is larger than the sum of its proper divisors (42807181).

12702221506571 is an equidigital number, since it uses as much as digits as its factorization.

12702221506571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42807180.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 12702221506571 in words is "twelve trillion, seven hundred two billion, two hundred twenty-one million, five hundred six thousand, five hundred seventy-one".