306111222 has 12 divisors (see below), whose sum is σ = 663241020. Its totient is φ = 102037068.

The previous prime is 306111203. The next prime is 306111227. The reversal of 306111222 is 222111603.

306111222 is a `hidden beast` number, since 30 + 611 + 1 + 2 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 17006179 = 306111222 / (3 + 0 + 6 + 1 + 1 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 306111195 and 306111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306111227) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 8503072 + ... + 8503107.

It is an arithmetic number, because the mean of its divisors is an integer number (55270085).

Almost surely, 2^306111222 is an apocalyptic number.

306111222 is an abundant number, since it is smaller than the sum of its proper divisors (357129798).

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

306111222 is a wasteful number, since it uses less digits than its factorization.

306111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17006187 (or 17006184 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 306111222 is about 17496.0344649866. The cubic root of 306111222 is about 673.9480437310.

Adding to 306111222 its reverse (222111603), we get a palindrome (528222825).

The spelling of 306111222 in words is "three hundred six million, one hundred eleven thousand, two hundred twenty-two".