212021310013 has 2 divisors, whose sum is σ = 212021310014. Its totient is φ = 212021310012.

The previous prime is 212021309963. The next prime is 212021310019. The reversal of 212021310013 is 310013120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131829264889 + 80192045124 = 363083^2 + 283182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021310013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021310019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010655006 + 106010655007.

It is an arithmetic number, because the mean of its divisors is an integer number (106010655007).

Almost surely, 2^212021310013 is an apocalyptic number.

It is an amenable number.

212021310013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021310013 is an equidigital number, since it uses as much as digits as its factorization.

212021310013 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 16.

Adding to 212021310013 its reverse (310013120212), we get a palindrome (522034430225).

The spelling of 212021310013 in words is "two hundred twelve billion, twenty-one million, three hundred ten thousand, thirteen".