224223220221 has 128 divisors (see below), whose sum is σ = 413109559296. Its totient is φ = 104397050880.

The previous prime is 224223220201. The next prime is 224223220253. The reversal of 224223220221 is 122022322422.

It is not a de Polignac number, because 224223220221 - 2⁷ = 224223220093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224223220191 and 224223220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224223220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 61887016 + ... + 61890638.

It is an arithmetic number, because the mean of its divisors is an integer number (3227418432).

Almost surely, 2^224223220221 is an apocalyptic number.

224223220221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

224223220221 is a deficient number, since it is larger than the sum of its proper divisors (188886339075).

224223220221 is a wasteful number, since it uses less digits than its factorization.

224223220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 224223220221 its reverse (122022322422), we get a palindrome (346245542643).

It can be divided in two parts, 224223 and 220221, that added together give a palindrome (444444).

The spelling of 224223220221 in words is "two hundred twenty-four billion, two hundred twenty-three million, two hundred twenty thousand, two hundred twenty-one".