221043273 has 8 divisors (see below), whose sum is σ = 321517536. Its totient is φ = 133965600.

The previous prime is 221043257. The next prime is 221043289. The reversal of 221043273 is 372340122.

221043273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221043257) and next prime (221043289).

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

It is not a de Polignac number, because 221043273 - 2⁴ = 221043257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221043223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3349108 + ... + 3349173.

It is an arithmetic number, because the mean of its divisors is an integer number (40189692).

Almost surely, 2^221043273 is an apocalyptic number.

It is an amenable number.

221043273 is a deficient number, since it is larger than the sum of its proper divisors (100474263).

221043273 is a wasteful number, since it uses less digits than its factorization.

221043273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6698295.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 221043273 is about 14867.5241045710. The cubic root of 221043273 is about 604.6338179788.

Adding to 221043273 its reverse (372340122), we get a palindrome (593383395).

The spelling of 221043273 in words is "two hundred twenty-one million, forty-three thousand, two hundred seventy-three".