212530013 has 2 divisors, whose sum is σ = 212530014. Its totient is φ = 212530012.

The previous prime is 212529973. The next prime is 212530057. The reversal of 212530013 is 310035212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190081369 + 22448644 = 13787^2 + 4738^2 .

It is a cyclic number.

It is not a de Polignac number, because 212530013 - 2¹⁰ = 212528989 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212529973 and 212530000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212530063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106265006 + 106265007.

It is an arithmetic number, because the mean of its divisors is an integer number (106265007).

Almost surely, 2^212530013 is an apocalyptic number.

It is an amenable number.

212530013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212530013 is an equidigital number, since it uses as much as digits as its factorization.

212530013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 212530013 is about 14578.4091381742. The cubic root of 212530013 is about 596.7696887674.

Adding to 212530013 its reverse (310035212), we get a palindrome (522565225).

The spelling of 212530013 in words is "two hundred twelve million, five hundred thirty thousand, thirteen".