222321006 has 24 divisors (see below), whose sum is σ = 482829984. Its totient is φ = 73932480.

The previous prime is 222320953. The next prime is 222321007. The reversal of 222321006 is 600123222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 222321006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222321007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6571 + ... + 22086.

It is an arithmetic number, because the mean of its divisors is an integer number (20117916).

Almost surely, 2^222321006 is an apocalyptic number.

222321006 is an abundant number, since it is smaller than the sum of its proper divisors (260508978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222321006 is a wasteful number, since it uses less digits than its factorization.

222321006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29096 (or 29093 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 222321006 is about 14910.4327904994. The cubic root of 222321006 is about 605.7966020002.

Adding to 222321006 its reverse (600123222), we get a palindrome (822444228).

The spelling of 222321006 in words is "two hundred twenty-two million, three hundred twenty-one thousand, six".