1121313344509 has 2 divisors, whose sum is σ = 1121313344510. Its totient is φ = 1121313344508.

The previous prime is 1121313344453. The next prime is 1121313344533. The reversal of 1121313344509 is 9054433131211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1121222618884 + 90725625 = 1058878^2 + 9525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121313344509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121313344209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656672254 + 560656672255.

It is an arithmetic number, because the mean of its divisors is an integer number (560656672255).

Almost surely, 2^{1121313344509} is an apocalyptic number.

It is an amenable number.

1121313344509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121313344509 is an equidigital number, since it uses as much as digits as its factorization.

1121313344509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1121313344509 in words is "one trillion, one hundred twenty-one billion, three hundred thirteen million, three hundred forty-four thousand, five hundred nine".