321162201271 has 4 divisors (see below), whose sum is σ = 321858865944. Its totient is φ = 320465536600.

The previous prime is 321162201253. The next prime is 321162201277. The reversal of 321162201271 is 172102261123.

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 321162201271 - 2⁹ = 321162200759 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 (321162201277) 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, 348331645 + ... + 348332566.

It is an arithmetic number, because the mean of its divisors is an integer number (80464716486).

Almost surely, 2^321162201271 is an apocalyptic number.

321162201271 is a deficient number, since it is larger than the sum of its proper divisors (696664673).

321162201271 is an equidigital number, since it uses as much as digits as its factorization.

321162201271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696664672.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 321162201271 its reverse (172102261123), we get a palindrome (493264462394).

The spelling of 321162201271 in words is "three hundred twenty-one billion, one hundred sixty-two million, two hundred one thousand, two hundred seventy-one".