1121223331289 has 4 divisors (see below), whose sum is σ = 1139604041700. Its totient is φ = 1102842620880.

The previous prime is 1121223331231. The next prime is 1121223331307. The reversal of 1121223331289 is 9821333221211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 417176475664 + 704046855625 = 645892^2 + 839075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121223331289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121223331589) 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 in 3 ways as a sum of consecutive naturals, for example, 9190355114 + ... + 9190355235.

It is an arithmetic number, because the mean of its divisors is an integer number (284901010425).

Almost surely, 2^{1121223331289} is an apocalyptic number.

It is an amenable number.

1121223331289 is a deficient number, since it is larger than the sum of its proper divisors (18380710411).

1121223331289 is an equidigital number, since it uses as much as digits as its factorization.

1121223331289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380710410.

The product of its digits is 31104, while the sum is 38.

The spelling of 1121223331289 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-three million, three hundred thirty-one thousand, two hundred eighty-nine".