16767272221 has 6 divisors (see below), whose sum is σ = 19504786110. Its totient is φ = 14371947576.

The previous prime is 16767272201. The next prime is 16767272233. The reversal of 16767272221 is 12227276761.

It can be written as a sum of positive squares in only one way, i.e., 16766624196 + 648025 = 129486^2 + 805^2 .

It is not a de Polignac number, because 16767272221 - 2⁵ = 16767272189 is a prime.

It is a super-2 number, since 2×16767272221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16767272201) 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, 171094566 + ... + 171094663.

It is an arithmetic number, because the mean of its divisors is an integer number (3250797685).

Almost surely, 2^16767272221 is an apocalyptic number.

It is an amenable number.

16767272221 is a deficient number, since it is larger than the sum of its proper divisors (2737513889).

16767272221 is an equidigital number, since it uses as much as digits as its factorization.

16767272221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342189243 (or 342189236 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The spelling of 16767272221 in words is "sixteen billion, seven hundred sixty-seven million, two hundred seventy-two thousand, two hundred twenty-one".