1212031302113 has 2 divisors, whose sum is σ = 1212031302114. Its totient is φ = 1212031302112.

The previous prime is 1212031302101. The next prime is 1212031302161. The reversal of 1212031302113 is 3112031302121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864505724944 + 347525577169 = 929788^2 + 589513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212031302113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212031308113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606015651056 + 606015651057.

It is an arithmetic number, because the mean of its divisors is an integer number (606015651057).

Almost surely, 2^{1212031302113} is an apocalyptic number.

It is an amenable number.

1212031302113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212031302113 is an equidigital number, since it uses as much as digits as its factorization.

1212031302113 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1212031302113 its reverse (3112031302121), we get a palindrome (4324062604234).

The spelling of 1212031302113 in words is "one trillion, two hundred twelve billion, thirty-one million, three hundred two thousand, one hundred thirteen".