1222232312 has 16 divisors (see below), whose sum is σ = 2619069360. Its totient is φ = 523813824.

The previous prime is 1222232309. The next prime is 1222232339. The reversal of 1222232312 is 2132322221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10912733 + ... + 10912844.

It is an arithmetic number, because the mean of its divisors is an integer number (163691835).

Almost surely, 2^1222232312 is an apocalyptic number.

It is an amenable number.

1222232312 is an abundant number, since it is smaller than the sum of its proper divisors (1396837048).

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

1222232312 is a wasteful number, since it uses less digits than its factorization.

1222232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21825590 (or 21825586 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 1222232312 is about 34960.4392420919. The cubic root of 1222232312 is about 1069.1810521095.

Adding to 1222232312 its reverse (2132322221), we get a palindrome (3354554533).

The spelling of 1222232312 in words is "one billion, two hundred twenty-two million, two hundred thirty-two thousand, three hundred twelve".