212252729789 has 2 divisors, whose sum is σ = 212252729790. Its totient is φ = 212252729788.

The previous prime is 212252729707. The next prime is 212252729851. The reversal of 212252729789 is 987927252212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183733964164 + 28518765625 = 428642^2 + 168875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212252729789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212252729389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106126364894 + 106126364895.

It is an arithmetic number, because the mean of its divisors is an integer number (106126364895).

Almost surely, 2^212252729789 is an apocalyptic number.

It is an amenable number.

212252729789 is a deficient number, since it is larger than the sum of its proper divisors (1).

212252729789 is an equidigital number, since it uses as much as digits as its factorization.

212252729789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 56.

The spelling of 212252729789 in words is "two hundred twelve billion, two hundred fifty-two million, seven hundred twenty-nine thousand, seven hundred eighty-nine".