1212433312 has 48 divisors (see below), whose sum is σ = 2468696832. Its totient is φ = 585538560.

The previous prime is 1212433309. The next prime is 1212433331. The reversal of 1212433312 is 2133342121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779928 + ... + 781480.

It is an arithmetic number, because the mean of its divisors is an integer number (51431184).

Almost surely, 2^1212433312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212433312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234348416).

1212433312 is an abundant number, since it is smaller than the sum of its proper divisors (1256263520).

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

1212433312 is a wasteful number, since it uses less digits than its factorization.

1212433312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381 (or 2373 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 1212433312 is about 34820.0130959194. The cubic root of 1212433312 is about 1066.3160677616.

Adding to 1212433312 its reverse (2133342121), we get a palindrome (3345775433).

The spelling of 1212433312 in words is "one billion, two hundred twelve million, four hundred thirty-three thousand, three hundred twelve".