220001223 has 16 divisors (see below), whose sum is σ = 324439136. Its totient is φ = 131725440.

The previous prime is 220001213. The next prime is 220001227. The reversal of 220001223 is 322100022.

It is not a de Polignac number, because 220001223 - 2⁴ = 220001207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220001199 and 220001208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001227) 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 15 ways as a sum of consecutive naturals, for example, 74788 + ... + 77673.

It is an arithmetic number, because the mean of its divisors is an integer number (20277446).

Almost surely, 2^220001223 is an apocalyptic number.

220001223 is a deficient number, since it is larger than the sum of its proper divisors (104437913).

220001223 is a wasteful number, since it uses less digits than its factorization.

220001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152514.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 220001223 is about 14832.4382014556. The cubic root of 220001223 is about 603.6821923170.

Adding to 220001223 its reverse (322100022), we get a palindrome (542101245).

The spelling of 220001223 in words is "two hundred twenty million, one thousand, two hundred twenty-three".