1120121121209 has 2 divisors, whose sum is σ = 1120121121210. Its totient is φ = 1120121121208.

The previous prime is 1120121121193. The next prime is 1120121121289. The reversal of 1120121121209 is 9021211210211.

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., 811287511225 + 308833609984 = 900715^2 + 555728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120121121209 - 2⁴ = 1120121121193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1120121121289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560060560604 + 560060560605.

It is an arithmetic number, because the mean of its divisors is an integer number (560060560605).

Almost surely, 2^{1120121121209} is an apocalyptic number.

It is an amenable number.

1120121121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120121121209 is an equidigital number, since it uses as much as digits as its factorization.

1120121121209 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 23.

The spelling of 1120121121209 in words is "one trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred nine".