1200201201209 has 2 divisors, whose sum is σ = 1200201201210. Its totient is φ = 1200201201208.

The previous prime is 1200201201041. The next prime is 1200201201217. The reversal of 1200201201209 is 9021021020021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093237536400 + 106963664809 = 1045580^2 + 327053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200201201209 - 2¹⁶ = 1200201135673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200201231209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600100600604 + 600100600605.

It is an arithmetic number, because the mean of its divisors is an integer number (600100600605).

Almost surely, 2^{1200201201209} is an apocalyptic number.

It is an amenable number.

1200201201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200201201209 is an equidigital number, since it uses as much as digits as its factorization.

1200201201209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1200201201209 in words is "one trillion, two hundred billion, two hundred one million, two hundred one thousand, two hundred nine".