1212103013312 has 28 divisors (see below), whose sum is σ = 2409229542720. Its totient is φ = 605053049856.

The previous prime is 1212103013281. The next prime is 1212103013321. The reversal of 1212103013312 is 2133103012121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15561737 + ... + 15639432.

It is an arithmetic number, because the mean of its divisors is an integer number (86043912240).

Almost surely, 2^{1212103013312} is an apocalyptic number.

It is an amenable number.

1212103013312 is a deficient number, since it is larger than the sum of its proper divisors (1197126529408).

1212103013312 is an equidigital number, since it uses as much as digits as its factorization.

1212103013312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31201788 (or 31201778 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1212103013312 its reverse (2133103012121), we get a palindrome (3345206025433).

The spelling of 1212103013312 in words is "one trillion, two hundred twelve billion, one hundred three million, thirteen thousand, three hundred twelve".