222820006 has 4 divisors (see below), whose sum is σ = 334230012. Its totient is φ = 111410002.

The previous prime is 222819959. The next prime is 222820063. The reversal of 222820006 is 600028222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600028222 = 2 ⋅300014111.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 55705000 + ... + 55705003.

It is an arithmetic number, because the mean of its divisors is an integer number (83557503).

Almost surely, 2^222820006 is an apocalyptic number.

222820006 is a deficient number, since it is larger than the sum of its proper divisors (111410006).

222820006 is a wasteful number, since it uses less digits than its factorization.

222820006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111410005.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 222820006 is about 14927.1566616017. The cubic root of 222820006 is about 606.2495006054.

Adding to 222820006 its reverse (600028222), we get a palindrome (822848228).

The spelling of 222820006 in words is "two hundred twenty-two million, eight hundred twenty thousand, six".