1212103002113 has 2 divisors, whose sum is σ = 1212103002114. Its totient is φ = 1212103002112.

The previous prime is 1212103002109. The next prime is 1212103002191. The reversal of 1212103002113 is 3112003012121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008853509889 + 203249492224 = 1004417^2 + 450832^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212103002113 - 2² = 1212103002109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212103002091 and 1212103002100.

It is not a weakly prime, because it can be changed into another prime (1212103002713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606051501056 + 606051501057.

It is an arithmetic number, because the mean of its divisors is an integer number (606051501057).

Almost surely, 2^{1212103002113} is an apocalyptic number.

It is an amenable number.

1212103002113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212103002113 is an equidigital number, since it uses as much as digits as its factorization.

1212103002113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1212103002113 its reverse (3112003012121), we get a palindrome (4324106014234).

The spelling of 1212103002113 in words is "one trillion, two hundred twelve billion, one hundred three million, two thousand, one hundred thirteen".