11120121209489 has 2 divisors, whose sum is σ = 11120121209490. Its totient is φ = 11120121209488.

The previous prime is 11120121209473. The next prime is 11120121209497. The reversal of 11120121209489 is 98490212102111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10837132320400 + 282988889089 = 3291980^2 + 531967^2 .

It is an emirp because it is prime and its reverse (98490212102111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11120121209489 - 2⁴ = 11120121209473 is a prime.

It is a super-2 number, since 2×11120121209489² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11120121239489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560060604744 + 5560060604745.

It is an arithmetic number, because the mean of its divisors is an integer number (5560060604745).

Almost surely, 2^{11120121209489} is an apocalyptic number.

It is an amenable number.

11120121209489 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120121209489 is an equidigital number, since it uses as much as digits as its factorization.

11120121209489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 41.

The spelling of 11120121209489 in words is "eleven trillion, one hundred twenty billion, one hundred twenty-one million, two hundred nine thousand, four hundred eighty-nine".