12225921571 has 2 divisors, whose sum is σ = 12225921572. Its totient is φ = 12225921570.

The previous prime is 12225921557. The next prime is 12225921593. The reversal of 12225921571 is 17512952221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12225921571 - 2⁷ = 12225921443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12225921571.

It is not a weakly prime, because it can be changed into another prime (12225921271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112960785 + 6112960786.

It is an arithmetic number, because the mean of its divisors is an integer number (6112960786).

Almost surely, 2^12225921571 is an apocalyptic number.

12225921571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12225921571 is an equidigital number, since it uses as much as digits as its factorization.

12225921571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 37.

The spelling of 12225921571 in words is "twelve billion, two hundred twenty-five million, nine hundred twenty-one thousand, five hundred seventy-one".