512242222 has 4 divisors (see below), whose sum is σ = 768363336. Its totient is φ = 256121110.

The previous prime is 512242139. The next prime is 512242253. The reversal of 512242222 is 222242215.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 512242193 and 512242202.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 128060554 + ... + 128060557.

It is an arithmetic number, because the mean of its divisors is an integer number (192090834).

Almost surely, 2^512242222 is an apocalyptic number.

512242222 is a deficient number, since it is larger than the sum of its proper divisors (256121114).

512242222 is a wasteful number, since it uses less digits than its factorization.

512242222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256121113.

The product of its digits is 1280, while the sum is 22.

The square root of 512242222 is about 22632.7687656636. The cubic root of 512242222 is about 800.1261374023.

Adding to 512242222 its reverse (222242215), we get a palindrome (734484437).

The spelling of 512242222 in words is "five hundred twelve million, two hundred forty-two thousand, two hundred twenty-two".