16722111271 has 4 divisors (see below), whose sum is σ = 16722832672. Its totient is φ = 16721389872.

The previous prime is 16722111269. The next prime is 16722111323. The reversal of 16722111271 is 17211122761.

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 16722111271 - 2¹ = 16722111269 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 (16722111671) 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, 324735 + ... + 372688.

It is an arithmetic number, because the mean of its divisors is an integer number (4180708168).

Almost surely, 2^16722111271 is an apocalyptic number.

16722111271 is a deficient number, since it is larger than the sum of its proper divisors (721401).

16722111271 is an equidigital number, since it uses as much as digits as its factorization.

16722111271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721400.

The product of its digits is 2352, while the sum is 31.

The spelling of 16722111271 in words is "sixteen billion, seven hundred twenty-two million, one hundred eleven thousand, two hundred seventy-one".