12111213631613 has 2 divisors, whose sum is σ = 12111213631614. Its totient is φ = 12111213631612.

The previous prime is 12111213631597. The next prime is 12111213631631. The reversal of 12111213631613 is 31613631211121.

12111213631613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (12111213631631) 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., 10318113201124 + 1793100430489 = 3212182^2 + 1339067^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111213631613 - 2⁴ = 12111213631597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111213631613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111213631663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055606815806 + 6055606815807.

It is an arithmetic number, because the mean of its divisors is an integer number (6055606815807).

Almost surely, 2^{12111213631613} is an apocalyptic number.

It is an amenable number.

12111213631613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111213631613 is an equidigital number, since it uses as much as digits as its factorization.

12111213631613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

Adding to 12111213631613 its reverse (31613631211121), we get a palindrome (43724844842734).

The spelling of 12111213631613 in words is "twelve trillion, one hundred eleven billion, two hundred thirteen million, six hundred thirty-one thousand, six hundred thirteen".