212012201189 has 2 divisors, whose sum is σ = 212012201190. Its totient is φ = 212012201188.

The previous prime is 212012201173. The next prime is 212012201231. The reversal of 212012201189 is 981102210212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208627870564 + 3384330625 = 456758^2 + 58175^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012201189 - 2⁴ = 212012201173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012201129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006100594 + 106006100595.

It is an arithmetic number, because the mean of its divisors is an integer number (106006100595).

Almost surely, 2^212012201189 is an apocalyptic number.

It is an amenable number.

212012201189 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012201189 is an equidigital number, since it uses as much as digits as its factorization.

212012201189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 212012201189 in words is "two hundred twelve billion, twelve million, two hundred one thousand, one hundred eighty-nine".