12670732175221 has 2 divisors, whose sum is σ = 12670732175222. Its totient is φ = 12670732175220.

The previous prime is 12670732175201. The next prime is 12670732175251. The reversal of 12670732175221 is 12257123707621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8878248570321 + 3792483604900 = 2979639^2 + 1947430^2 .

It is a cyclic number.

It is not a de Polignac number, because 12670732175221 - 2⁴¹ = 10471708919669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12670732175201) 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 as a sum of consecutive naturals, namely, 6335366087610 + 6335366087611.

It is an arithmetic number, because the mean of its divisors is an integer number (6335366087611).

Almost surely, 2^{12670732175221} is an apocalyptic number.

It is an amenable number.

12670732175221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12670732175221 is an equidigital number, since it uses as much as digits as its factorization.

12670732175221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 12670732175221 in words is "twelve trillion, six hundred seventy billion, seven hundred thirty-two million, one hundred seventy-five thousand, two hundred twenty-one".