1121285369 has 2 divisors, whose sum is σ = 1121285370. Its totient is φ = 1121285368.

The previous prime is 1121285359. The next prime is 1121285387. The reversal of 1121285369 is 9635821211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759829225 + 361456144 = 27565^2 + 19012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121285369 is a prime.

It is a super-2 number, since 2×1121285369² = 2514561757466932322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121285359) 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, 560642684 + 560642685.

It is an arithmetic number, because the mean of its divisors is an integer number (560642685).

Almost surely, 2^1121285369 is an apocalyptic number.

It is an amenable number.

1121285369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121285369 is an equidigital number, since it uses as much as digits as its factorization.

1121285369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 1121285369 is about 33485.5994272165. The cubic root of 1121285369 is about 1038.8959465210.

The spelling of 1121285369 in words is "one billion, one hundred twenty-one million, two hundred eighty-five thousand, three hundred sixty-nine".