1121564130209 has 2 divisors, whose sum is σ = 1121564130210. Its totient is φ = 1121564130208.

The previous prime is 1121564130163. The next prime is 1121564130221. The reversal of 1121564130209 is 9020314651211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088416465984 + 33147664225 = 1043272^2 + 182065^2 .

It is an emirp because it is prime and its reverse (9020314651211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121564130209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121564130259) 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, 560782065104 + 560782065105.

It is an arithmetic number, because the mean of its divisors is an integer number (560782065105).

Almost surely, 2^{1121564130209} is an apocalyptic number.

It is an amenable number.

1121564130209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121564130209 is an equidigital number, since it uses as much as digits as its factorization.

1121564130209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 1121564130209 in words is "one trillion, one hundred twenty-one billion, five hundred sixty-four million, one hundred thirty thousand, two hundred nine".