1121123220289 has 2 divisors, whose sum is σ = 1121123220290. Its totient is φ = 1121123220288.

The previous prime is 1121123220229. The next prime is 1121123220293. The reversal of 1121123220289 is 9820223211211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 945528698689 + 175594521600 = 972383^2 + 419040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121123220289 - 2²⁷ = 1120989002561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121123220229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560561610144 + 560561610145.

It is an arithmetic number, because the mean of its divisors is an integer number (560561610145).

Almost surely, 2^{1121123220289} is an apocalyptic number.

It is an amenable number.

1121123220289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121123220289 is an equidigital number, since it uses as much as digits as its factorization.

1121123220289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 1121123220289 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty thousand, two hundred eighty-nine".