12727106621 has 4 divisors (see below), whose sum is σ = 12784179072. Its totient is φ = 12670034172.

The previous prime is 12727106617. The next prime is 12727106629. The reversal of 12727106621 is 12660172721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12660172721 = 7 ⋅1808596103.

It is a cyclic number.

It is not a de Polignac number, because 12727106621 - 2² = 12727106617 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 (12727106629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28535891 + ... + 28536336.

It is an arithmetic number, because the mean of its divisors is an integer number (3196044768).

Almost surely, 2^12727106621 is an apocalyptic number.

It is an amenable number.

12727106621 is a deficient number, since it is larger than the sum of its proper divisors (57072451).

12727106621 is an equidigital number, since it uses as much as digits as its factorization.

12727106621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57072450.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 12727106621 in words is "twelve billion, seven hundred twenty-seven million, one hundred six thousand, six hundred twenty-one".