12671754221071 has 16 divisors (see below), whose sum is σ = 13868563258368. Its totient is φ = 11482420622400.

The previous prime is 12671754221003. The next prime is 12671754221171. The reversal of 12671754221071 is 17012245717621.

It is a cyclic number.

It is not a de Polignac number, because 12671754221071 - 2¹¹ = 12671754219023 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 (12671754221171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82924066 + ... + 83076736.

It is an arithmetic number, because the mean of its divisors is an integer number (866785203648).

Almost surely, 2^{12671754221071} is an apocalyptic number.

12671754221071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12671754221071 is a deficient number, since it is larger than the sum of its proper divisors (1196809037297).

12671754221071 is a wasteful number, since it uses less digits than its factorization.

12671754221071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177102.

The product of its (nonzero) digits is 329280, while the sum is 46.

Adding to 12671754221071 its reverse (17012245717621), we get a palindrome (29683999938692).

The spelling of 12671754221071 in words is "twelve trillion, six hundred seventy-one billion, seven hundred fifty-four million, two hundred twenty-one thousand, seventy-one".