212009684351189 has 2 divisors, whose sum is σ = 212009684351190. Its totient is φ = 212009684351188.

The previous prime is 212009684351177. The next prime is 212009684351263. The reversal of 212009684351189 is 981153486900212.

212009684351189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209263564743025 + 2746119608164 = 14465945^2 + 1657142^2 .

It is a cyclic number.

It is not a de Polignac number, because 212009684351189 - 2⁴ = 212009684351173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212009684351149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106004842175594 + 106004842175595.

It is an arithmetic number, because the mean of its divisors is an integer number (106004842175595).

Almost surely, 2^{212009684351189} is an apocalyptic number.

It is an amenable number.

212009684351189 is a deficient number, since it is larger than the sum of its proper divisors (1).

212009684351189 is an equidigital number, since it uses as much as digits as its factorization.

212009684351189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 212009684351189 in words is "two hundred twelve trillion, nine billion, six hundred eighty-four million, three hundred fifty-one thousand, one hundred eighty-nine".