12316061642221 has 4 divisors (see below), whose sum is σ = 12316693611100. Its totient is φ = 12315429673344.

The previous prime is 12316061642219. The next prime is 12316061642231. The reversal of 12316061642221 is 12224616061321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2928051434025 + 9388010208196 = 1711155^2 + 3063986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12316061642221 - 2¹ = 12316061642219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12316061642231) 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, 315955206 + ... + 315994183.

It is an arithmetic number, because the mean of its divisors is an integer number (3079173402775).

Almost surely, 2^{12316061642221} is an apocalyptic number.

It is an amenable number.

12316061642221 is a deficient number, since it is larger than the sum of its proper divisors (631968879).

12316061642221 is an equidigital number, since it uses as much as digits as its factorization.

12316061642221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631968878.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 12316061642221 in words is "twelve trillion, three hundred sixteen billion, sixty-one million, six hundred forty-two thousand, two hundred twenty-one".