220243211 has 16 divisors (see below), whose sum is σ = 236507040. Its totient is φ = 204372480.

The previous prime is 220243183. The next prime is 220243223. The reversal of 220243211 is 112342022.

It is a cyclic number.

It is not a de Polignac number, because 220243211 - 2¹⁴ = 220226827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 220243211.

It is not an unprimeable number, because it can be changed into a prime (220243241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477521 + ... + 477981.

It is an arithmetic number, because the mean of its divisors is an integer number (14781690).

Almost surely, 2^220243211 is an apocalyptic number.

220243211 is a deficient number, since it is larger than the sum of its proper divisors (16263829).

220243211 is a wasteful number, since it uses less digits than its factorization.

220243211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 220243211 is about 14840.5933506717. The cubic root of 220243211 is about 603.9034491445.

Adding to 220243211 its reverse (112342022), we get a palindrome (332585233).

The spelling of 220243211 in words is "two hundred twenty million, two hundred forty-three thousand, two hundred eleven".