16221276273 has 8 divisors (see below), whose sum is σ = 21640478688. Its totient is φ = 10808129024.

The previous prime is 16221276251. The next prime is 16221276293. The reversal of 16221276273 is 37267212261.

16221276273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16221276273 - 2¹⁰ = 16221275249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16221276293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507536 + ... + 1518257.

It is an arithmetic number, because the mean of its divisors is an integer number (2705059836).

Almost surely, 2^16221276273 is an apocalyptic number.

It is an amenable number.

16221276273 is a deficient number, since it is larger than the sum of its proper divisors (5419202415).

16221276273 is a wasteful number, since it uses less digits than its factorization.

16221276273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027583.

The product of its digits is 84672, while the sum is 39.

The spelling of 16221276273 in words is "sixteen billion, two hundred twenty-one million, two hundred seventy-six thousand, two hundred seventy-three".