1213331330312 has 32 divisors (see below), whose sum is σ = 2279076363480. Its totient is φ = 605578152960.

The previous prime is 1213331330303. The next prime is 1213331330363. The reversal of 1213331330312 is 2130331333121.

It can be written as a sum of positive squares in 4 ways, for example, as 1178297224036 + 35034106276 = 1085494^2 + 187174^2 .

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, 20027138 + ... + 20087630.

Almost surely, 2^{1213331330312} is an apocalyptic number.

It is an amenable number.

1213331330312 is a deficient number, since it is larger than the sum of its proper divisors (1065745033168).

1213331330312 is a wasteful number, since it uses less digits than its factorization.

1213331330312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64953 (or 64949 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1213331330312 its reverse (2130331333121), we get a palindrome (3343662663433).

The spelling of 1213331330312 in words is "one trillion, two hundred thirteen billion, three hundred thirty-one million, three hundred thirty thousand, three hundred twelve".