16221679271 has 6 divisors (see below), whose sum is σ = 18870116760. Its totient is φ = 13904296476.

The previous prime is 16221679247. The next prime is 16221679283. The reversal of 16221679271 is 17297612261.

It is not a de Polignac number, because 16221679271 - 2¹⁰ = 16221678247 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 (16221679211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165527291 + ... + 165527388.

It is an arithmetic number, because the mean of its divisors is an integer number (3145019460).

Almost surely, 2^16221679271 is an apocalyptic number.

16221679271 is a deficient number, since it is larger than the sum of its proper divisors (2648437489).

16221679271 is an equidigital number, since it uses as much as digits as its factorization.

16221679271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331054693 (or 331054686 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The spelling of 16221679271 in words is "sixteen billion, two hundred twenty-one million, six hundred seventy-nine thousand, two hundred seventy-one".