1211342430013 has 2 divisors, whose sum is σ = 1211342430014. Its totient is φ = 1211342430012.

The previous prime is 1211342430007. The next prime is 1211342430031. The reversal of 1211342430013 is 3100342431121.

Together with next prime (1211342430031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1205731371364 + 5611058649 = 1098058^2 + 74907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211342430013 - 2⁵ = 1211342429981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211342430013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211342430043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605671215006 + 605671215007.

It is an arithmetic number, because the mean of its divisors is an integer number (605671215007).

Almost surely, 2^{1211342430013} is an apocalyptic number.

It is an amenable number.

1211342430013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211342430013 is an equidigital number, since it uses as much as digits as its factorization.

1211342430013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1211342430013 its reverse (3100342431121), we get a palindrome (4311684861134).

The spelling of 1211342430013 in words is "one trillion, two hundred eleven billion, three hundred forty-two million, four hundred thirty thousand, thirteen".