12271354237591 has 4 divisors (see below), whose sum is σ = 12532446880992. Its totient is φ = 12010261594192.

The previous prime is 12271354237577. The next prime is 12271354237619. The reversal of 12271354237591 is 19573245317221.

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

It is a cyclic number.

It is not a de Polignac number, because 12271354237591 - 2³⁷ = 12133915284119 is a prime.

It is a super-2 number, since 2×12271354237591² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271354247591) 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 in 3 ways as a sum of consecutive naturals, for example, 130546321630 + ... + 130546321723.

It is an arithmetic number, because the mean of its divisors is an integer number (3133111720248).

Almost surely, 2^{12271354237591} is an apocalyptic number.

12271354237591 is a deficient number, since it is larger than the sum of its proper divisors (261092643401).

12271354237591 is an equidigital number, since it uses as much as digits as its factorization.

12271354237591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261092643400.

The product of its digits is 3175200, while the sum is 52.

The spelling of 12271354237591 in words is "twelve trillion, two hundred seventy-one billion, three hundred fifty-four million, two hundred thirty-seven thousand, five hundred ninety-one".