212000212011209 has 2 divisors, whose sum is σ = 212000212011210. Its totient is φ = 212000212011208.

The previous prime is 212000212011169. The next prime is 212000212011223. The reversal of 212000212011209 is 902110212000212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177584941210000 + 34415270801209 = 13326100^2 + 5866453^2 .

It is a cyclic number.

It is not a de Polignac number, because 212000212011209 - 2¹² = 212000212007113 is a prime.

It is not a weakly prime, because it can be changed into another prime (212000212071209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000106005604 + 106000106005605.

It is an arithmetic number, because the mean of its divisors is an integer number (106000106005605).

Almost surely, 2^{212000212011209} is an apocalyptic number.

It is an amenable number.

212000212011209 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000212011209 is an equidigital number, since it uses as much as digits as its factorization.

212000212011209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 212000212011209 in words is "two hundred twelve trillion, two hundred twelve million, eleven thousand, two hundred nine".