212010201092909 has 2 divisors, whose sum is σ = 212010201092910. Its totient is φ = 212010201092908.

The previous prime is 212010201092897. The next prime is 212010201092927. The reversal of 212010201092909 is 909290102010212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185320031032900 + 26690170060009 = 13613230^2 + 5166253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212010201092909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212010201092509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005100546454 + 106005100546455.

It is an arithmetic number, because the mean of its divisors is an integer number (106005100546455).

Almost surely, 2^{212010201092909} is an apocalyptic number.

It is an amenable number.

212010201092909 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010201092909 is an equidigital number, since it uses as much as digits as its factorization.

212010201092909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 212010201092909 in words is "two hundred twelve trillion, ten billion, two hundred one million, ninety-two thousand, nine hundred nine".