222030312 has 64 divisors (see below), whose sum is σ = 642055680. Its totient is φ = 62668992.

The previous prime is 222030307. The next prime is 222030331. The reversal of 222030312 is 213030222.

222030312 = T₄₆₃ + T₄₆₄ + ... + T₁₁₂₆.

It is a junction number, because it is equal to n+sod(n) for n = 222030291 and 222030300.

It is an unprimeable number.

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, 5983 + ... + 21905.

It is an arithmetic number, because the mean of its divisors is an integer number (10032120).

Almost surely, 2^222030312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222030312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321027840).

222030312 is an abundant number, since it is smaller than the sum of its proper divisors (420025368).

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

222030312 is a wasteful number, since it uses less digits than its factorization.

222030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022 (or 16018 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 222030312 is about 14900.6815951486. The cubic root of 222030312 is about 605.5324520521.

Adding to 222030312 its reverse (213030222), we get a palindrome (435060534).

The spelling of 222030312 in words is "two hundred twenty-two million, thirty thousand, three hundred twelve".