623221222 has 32 divisors (see below), whose sum is σ = 1033224192. Its totient is φ = 280135584.

The previous prime is 623221219. The next prime is 623221237. The reversal of 623221222 is 222122326.

It is a happy number.

623221222 is digitally balanced in base 2, 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 = 623221193 and 623221202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271363 + ... + 273649.

It is an arithmetic number, because the mean of its divisors is an integer number (32288256).

Almost surely, 2^623221222 is an apocalyptic number.

623221222 is a deficient number, since it is larger than the sum of its proper divisors (410002970).

623221222 is a wasteful number, since it uses less digits than its factorization.

623221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572.

The product of its digits is 1152, while the sum is 22.

The square root of 623221222 is about 24964.3990915063. The cubic root of 623221222 is about 854.1760912744.

Adding to 623221222 its reverse (222122326), we get a palindrome (845343548).

The spelling of 623221222 in words is "six hundred twenty-three million, two hundred twenty-one thousand, two hundred twenty-two".