512222216 has 64 divisors (see below), whose sum is σ = 1116460800. Its totient is φ = 217857600.

The previous prime is 512222203. The next prime is 512222237. The reversal of 512222216 is 612222215.

It is a junction number, because it is equal to n+sod(n) for n = 512222191 and 512222200.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 136931 + ... + 140621.

It is an arithmetic number, because the mean of its divisors is an integer number (17444700).

Almost surely, 2^512222216 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 512222216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558230400).

512222216 is an abundant number, since it is smaller than the sum of its proper divisors (604238584).

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

512222216 is a wasteful number, since it uses less digits than its factorization.

512222216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810 (or 3806 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 512222216 is about 22632.3267915608. The cubic root of 512222216 is about 800.1157207601.

Subtracting 512222216 from its reverse (612222215), we obtain a palindrome (99999999).

It can be divided in two parts, 5 and 12222216, that added together give a palindrome (12222221).

The spelling of 512222216 in words is "five hundred twelve million, two hundred twenty-two thousand, two hundred sixteen".