1212443312 has 10 divisors (see below), whose sum is σ = 2349108948. Its totient is φ = 606221648.

The previous prime is 1212443311. The next prime is 1212443327. The reversal of 1212443312 is 2133442121.

It is a super-3 number, since 3×1212443312³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212443311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37888838 + ... + 37888869.

Almost surely, 2^1212443312 is an apocalyptic number.

It is an amenable number.

1212443312 is a deficient number, since it is larger than the sum of its proper divisors (1136665636).

1212443312 is an equidigital number, since it uses as much as digits as its factorization.

1212443312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75777715 (or 75777709 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1212443312 is about 34820.1566912040. The cubic root of 1212443312 is about 1066.3189993679.

Adding to 1212443312 its reverse (2133442121), we get a palindrome (3345885433).

The spelling of 1212443312 in words is "one billion, two hundred twelve million, four hundred forty-three thousand, three hundred twelve".