1121131009 has 2 divisors, whose sum is σ = 1121131010. Its totient is φ = 1121131008.

The previous prime is 1121131003. The next prime is 1121131013. The reversal of 1121131009 is 9001311211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 880012225 + 241118784 = 29665^2 + 15528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121131009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121131003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560565504 + 560565505.

It is an arithmetic number, because the mean of its divisors is an integer number (560565505).

Almost surely, 2^1121131009 is an apocalyptic number.

It is an amenable number.

1121131009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121131009 is an equidigital number, since it uses as much as digits as its factorization.

1121131009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1121131009 is about 33483.2944764998. The cubic root of 1121131009 is about 1038.8482716703.

The spelling of 1121131009 in words is "one billion, one hundred twenty-one million, one hundred thirty-one thousand, nine".