221839276271 has 2 divisors, whose sum is σ = 221839276272. Its totient is φ = 221839276270.

The previous prime is 221839276223. The next prime is 221839276301. The reversal of 221839276271 is 172672938122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221839276271 - 2⁶ = 221839276207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221839272271) 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 as a sum of consecutive naturals, namely, 110919638135 + 110919638136.

It is an arithmetic number, because the mean of its divisors is an integer number (110919638136).

Almost surely, 2^221839276271 is an apocalyptic number.

221839276271 is a deficient number, since it is larger than the sum of its proper divisors (1).

221839276271 is an equidigital number, since it uses as much as digits as its factorization.

221839276271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The spelling of 221839276271 in words is "two hundred twenty-one billion, eight hundred thirty-nine million, two hundred seventy-six thousand, two hundred seventy-one".