221123230271 has 2 divisors, whose sum is σ = 221123230272. Its totient is φ = 221123230270.

The previous prime is 221123230259. The next prime is 221123230309. The reversal of 221123230271 is 172032321122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221123230271 - 2¹⁰ = 221123229247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221123230271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221123230171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110561615135 + 110561615136.

It is an arithmetic number, because the mean of its divisors is an integer number (110561615136).

Almost surely, 2^221123230271 is an apocalyptic number.

221123230271 is a deficient number, since it is larger than the sum of its proper divisors (1).

221123230271 is an equidigital number, since it uses as much as digits as its factorization.

221123230271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 221123230271 its reverse (172032321122), we get a palindrome (393155551393).

The spelling of 221123230271 in words is "two hundred twenty-one billion, one hundred twenty-three million, two hundred thirty thousand, two hundred seventy-one".