212320559989 has 2 divisors, whose sum is σ = 212320559990. Its totient is φ = 212320559988.

The previous prime is 212320559987. The next prime is 212320560007. The reversal of 212320559989 is 989955023212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209230311889 + 3090248100 = 457417^2 + 55590^2 .

It is a cyclic number.

It is not a de Polignac number, because 212320559989 - 2¹ = 212320559987 is a prime.

Together with 212320559987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212320559987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160279994 + 106160279995.

It is an arithmetic number, because the mean of its divisors is an integer number (106160279995).

Almost surely, 2^212320559989 is an apocalyptic number.

It is an amenable number.

212320559989 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320559989 is an equidigital number, since it uses as much as digits as its factorization.

212320559989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 212320559989 in words is "two hundred twelve billion, three hundred twenty million, five hundred fifty-nine thousand, nine hundred eighty-nine".