1210000002209 has 2 divisors, whose sum is σ = 1210000002210. Its totient is φ = 1210000002208.

The previous prime is 1210000002187. The next prime is 1210000002229. The reversal of 1210000002209 is 9022000000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1210000000000 + 2209 = 1100000^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210000002209 - 2⁴⁰ = 110488374433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210000002229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605000001104 + 605000001105.

It is an arithmetic number, because the mean of its divisors is an integer number (605000001105).

Almost surely, 2^{1210000002209} is an apocalyptic number.

It is an amenable number.

1210000002209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210000002209 is an equidigital number, since it uses as much as digits as its factorization.

1210000002209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

It can be divided in two parts, 121000000 and 2209, that multiplied together give a square (267289000000 = 517000²).

The spelling of 1210000002209 in words is "one trillion, two hundred ten billion, two thousand, two hundred nine".