221200543 has 8 divisors (see below), whose sum is σ = 222437600. Its totient is φ = 219967488.

The previous prime is 221200519. The next prime is 221200547. The reversal of 221200543 is 345002122.

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 221200543 - 2¹³ = 221192351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221200543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200547) 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, 240238 + ... + 241156.

It is an arithmetic number, because the mean of its divisors is an integer number (27804700).

Almost surely, 2^221200543 is an apocalyptic number.

221200543 is a deficient number, since it is larger than the sum of its proper divisors (1237057).

221200543 is an equidigital number, since it uses as much as digits as its factorization.

221200543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 221200543 is about 14872.8122088595. The cubic root of 221200543 is about 604.7771808841. Note that the first 3 decimals are identical.

Adding to 221200543 its reverse (345002122), we get a palindrome (566202665).

The spelling of 221200543 in words is "two hundred twenty-one million, two hundred thousand, five hundred forty-three".