1210011201209 has 2 divisors, whose sum is σ = 1210011201210. Its totient is φ = 1210011201208.

The previous prime is 1210011201199. The next prime is 1210011201277. The reversal of 1210011201209 is 9021021100121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1184335945984 + 25675255225 = 1088272^2 + 160235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210011201209 - 2¹⁶ = 1210011135673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1210011201409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605005600604 + 605005600605.

It is an arithmetic number, because the mean of its divisors is an integer number (605005600605).

Almost surely, 2^{1210011201209} is an apocalyptic number.

It is an amenable number.

1210011201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210011201209 is an equidigital number, since it uses as much as digits as its factorization.

1210011201209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1210011201209 in words is "one trillion, two hundred ten billion, eleven million, two hundred one thousand, two hundred nine".