1110020121209 has 2 divisors, whose sum is σ = 1110020121210. Its totient is φ = 1110020121208.

The previous prime is 1110020121193. The next prime is 1110020121227. The reversal of 1110020121209 is 9021210200111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 790961209600 + 319058911609 = 889360^2 + 564853^2 .

It is an emirp because it is prime and its reverse (9021210200111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1110020121209 - 2⁴ = 1110020121193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1110020121289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555010060604 + 555010060605.

It is an arithmetic number, because the mean of its divisors is an integer number (555010060605).

Almost surely, 2^{1110020121209} is an apocalyptic number.

It is an amenable number.

1110020121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110020121209 is an equidigital number, since it uses as much as digits as its factorization.

1110020121209 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 20.

The spelling of 1110020121209 in words is "one trillion, one hundred ten billion, twenty million, one hundred twenty-one thousand, two hundred nine".