1222332312 has 32 divisors (see below), whose sum is σ = 3085505280. Its totient is φ = 403487520.

The previous prime is 1222332271. The next prime is 1222332313. The reversal of 1222332312 is 2132332221.

It is a happy number.

1222332312 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222332313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244764 + ... + 249707.

It is an arithmetic number, because the mean of its divisors is an integer number (96422040).

Almost surely, 2^1222332312 is an apocalyptic number.

1222332312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222332312 is an abundant number, since it is smaller than the sum of its proper divisors (1863172968).

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

1222332312 is a wasteful number, since it uses less digits than its factorization.

1222332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494583 (or 494579 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 1222332312 is about 34961.8694008201. The cubic root of 1222332312 is about 1069.2102105568.

Adding to 1222332312 its reverse (2132332221), we get a palindrome (3354664533).

Subtracting 1222332312 from its reverse (2132332221), we obtain a palindrome (909999909).

The spelling of 1222332312 in words is "one billion, two hundred twenty-two million, three hundred thirty-two thousand, three hundred twelve".