1222305212 has 12 divisors (see below), whose sum is σ = 2196846120. Its totient is φ = 594634896.

The previous prime is 1222305167. The next prime is 1222305269. The reversal of 1222305212 is 2125032221.

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 in 3 ways as a sum of consecutive naturals, for example, 4129262 + ... + 4129557.

It is an arithmetic number, because the mean of its divisors is an integer number (183070510).

Almost surely, 2^1222305212 is an apocalyptic number.

It is an amenable number.

1222305212 is a deficient number, since it is larger than the sum of its proper divisors (974540908).

1222305212 is a wasteful number, since it uses less digits than its factorization.

1222305212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258860 (or 8258858 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1222305212 is about 34961.4818335837. The cubic root of 1222305212 is about 1069.2023087747.

Adding to 1222305212 its reverse (2125032221), we get a palindrome (3347337433).

The spelling of 1222305212 in words is "one billion, two hundred twenty-two million, three hundred five thousand, two hundred twelve".