1212313133333 has 4 divisors (see below), whose sum is σ = 1212441661068. Its totient is φ = 1212184605600.

The previous prime is 1212313133309. The next prime is 1212313133399. The reversal of 1212313133333 is 3333313132121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 546419596804 + 665893536529 = 739202^2 + 816023^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212313133333 - 2⁸ = 1212313133077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212313133296 and 1212313133305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212313133033) by changing a digit.

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, 64249718 + ... + 64268583.

It is an arithmetic number, because the mean of its divisors is an integer number (303110415267).

Almost surely, 2^{1212313133333} is an apocalyptic number.

It is an amenable number.

1212313133333 is a deficient number, since it is larger than the sum of its proper divisors (128527735).

1212313133333 is an equidigital number, since it uses as much as digits as its factorization.

1212313133333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128527734.

The product of its digits is 8748, while the sum is 29.

Adding to 1212313133333 its reverse (3333313132121), we get a palindrome (4545626265454).

The spelling of 1212313133333 in words is "one trillion, two hundred twelve billion, three hundred thirteen million, one hundred thirty-three thousand, three hundred thirty-three".