126968330213 has 2 divisors, whose sum is σ = 126968330214. Its totient is φ = 126968330212.

The previous prime is 126968330201. The next prime is 126968330231. The reversal of 126968330213 is 312033869621.

Together with next prime (126968330231) 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., 101195880769 + 25772449444 = 318113^2 + 160538^2 .

It is an emirp because it is prime and its reverse (312033869621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126968330213 is a prime.

It is a super-2 number, since 2×126968330213² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126968333213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63484165106 + 63484165107.

It is an arithmetic number, because the mean of its divisors is an integer number (63484165107).

Almost surely, 2^126968330213 is an apocalyptic number.

It is an amenable number.

126968330213 is a deficient number, since it is larger than the sum of its proper divisors (1).

126968330213 is an equidigital number, since it uses as much as digits as its factorization.

126968330213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 126968330213 in words is "one hundred twenty-six billion, nine hundred sixty-eight million, three hundred thirty thousand, two hundred thirteen".