1121312089 has 2 divisors, whose sum is σ = 1121312090. Its totient is φ = 1121312088.

The previous prime is 1121312081. The next prime is 1121312107. The reversal of 1121312089 is 9802131211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110022489 + 11289600 = 33317^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121312089 - 2³ = 1121312081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121312081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656044 + 560656045.

It is an arithmetic number, because the mean of its divisors is an integer number (560656045).

Almost surely, 2^1121312089 is an apocalyptic number.

It is an amenable number.

1121312089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121312089 is an equidigital number, since it uses as much as digits as its factorization.

1121312089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1121312089 is about 33485.9984023173. The cubic root of 1121312089 is about 1038.9041986811.

The spelling of 1121312089 in words is "one billion, one hundred twenty-one million, three hundred twelve thousand, eighty-nine".