221223422 has 32 divisors (see below), whose sum is σ = 400512000. Its totient is φ = 89525088.

The previous prime is 221223421. The next prime is 221223451. The reversal of 221223422 is 224322122.

221223422 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221223394 and 221223403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221223421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91643 + ... + 94025.

It is an arithmetic number, because the mean of its divisors is an integer number (12516000).

Almost surely, 2^221223422 is an apocalyptic number.

221223422 is a deficient number, since it is larger than the sum of its proper divisors (179288578).

221223422 is a wasteful number, since it uses less digits than its factorization.

221223422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its digits is 768, while the sum is 20.

The square root of 221223422 is about 14873.5813441148. The cubic root of 221223422 is about 604.7980310742.

Adding to 221223422 its reverse (224322122), we get a palindrome (445545544).

The spelling of 221223422 in words is "two hundred twenty-one million, two hundred twenty-three thousand, four hundred twenty-two".