212755008889 has 2 divisors, whose sum is σ = 212755008890. Its totient is φ = 212755008888.

The previous prime is 212755008833. The next prime is 212755008911. The reversal of 212755008889 is 988800557212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150317493264 + 62437515625 = 387708^2 + 249875^2 .

It is a cyclic number.

It is not a de Polignac number, because 212755008889 - 2⁷ = 212755008761 is a prime.

It is not a weakly prime, because it can be changed into another prime (212755008289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106377504444 + 106377504445.

It is an arithmetic number, because the mean of its divisors is an integer number (106377504445).

Almost surely, 2^212755008889 is an apocalyptic number.

It is an amenable number.

212755008889 is a deficient number, since it is larger than the sum of its proper divisors (1).

212755008889 is an equidigital number, since it uses as much as digits as its factorization.

212755008889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 212755008889 in words is "two hundred twelve billion, seven hundred fifty-five million, eight thousand, eight hundred eighty-nine".