212121001210289 has 2 divisors, whose sum is σ = 212121001210290. Its totient is φ = 212121001210288.

The previous prime is 212121001210211. The next prime is 212121001210361. The reversal of 212121001210289 is 982012100121212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165441771081889 + 46679230128400 = 12862417^2 + 6832220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212121001210289 is a prime.

It is a super-3 number, since 3×212121001210289³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (212121001210189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060500605144 + 106060500605145.

It is an arithmetic number, because the mean of its divisors is an integer number (106060500605145).

Almost surely, 2^{212121001210289} is an apocalyptic number.

It is an amenable number.

212121001210289 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121001210289 is an equidigital number, since it uses as much as digits as its factorization.

212121001210289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 212121001210289 in words is "two hundred twelve trillion, one hundred twenty-one billion, one million, two hundred ten thousand, two hundred eighty-nine".