1210421304013 has 2 divisors, whose sum is σ = 1210421304014. Its totient is φ = 1210421304012.

The previous prime is 1210421303963. The next prime is 1210421304041. The reversal of 1210421304013 is 3104031240121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144722386889 + 65698917124 = 1069917^2 + 256318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210421304013 - 2⁹ = 1210421303501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210421304413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605210652006 + 605210652007.

It is an arithmetic number, because the mean of its divisors is an integer number (605210652007).

Almost surely, 2^{1210421304013} is an apocalyptic number.

It is an amenable number.

1210421304013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210421304013 is an equidigital number, since it uses as much as digits as its factorization.

1210421304013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1210421304013 its reverse (3104031240121), we get a palindrome (4314452544134).

The spelling of 1210421304013 in words is "one trillion, two hundred ten billion, four hundred twenty-one million, three hundred four thousand, thirteen".