212122201002109 has 2 divisors, whose sum is σ = 212122201002110. Its totient is φ = 212122201002108.

The previous prime is 212122201002091. The next prime is 212122201002121. The reversal of 212122201002109 is 901200102221212.

It is a happy number.

Together with previous prime (212122201002091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143846321024025 + 68275879978084 = 11993595^2 + 8262922^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122201002109 - 2³⁵ = 212087841263741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212122201006109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061100501054 + 106061100501055.

It is an arithmetic number, because the mean of its divisors is an integer number (106061100501055).

Almost surely, 2^{212122201002109} is an apocalyptic number.

It is an amenable number.

212122201002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122201002109 is an equidigital number, since it uses as much as digits as its factorization.

212122201002109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 212122201002109 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred one million, two thousand, one hundred nine".