121110289 has 2 divisors, whose sum is σ = 121110290. Its totient is φ = 121110288.

The previous prime is 121110277. The next prime is 121110323. The reversal of 121110289 is 982011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 286225 = 10992^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 121110289 - 2²¹ = 119013137 is a prime.

It is not a weakly prime, because it can be changed into another prime (121110259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555144 + 60555145.

It is an arithmetic number, because the mean of its divisors is an integer number (60555145).

Almost surely, 2^121110289 is an apocalyptic number.

It is an amenable number.

121110289 is a deficient number, since it is larger than the sum of its proper divisors (1).

121110289 is an equidigital number, since it uses as much as digits as its factorization.

121110289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 121110289 is about 11005.0119945414. The cubic root of 121110289 is about 494.7589739075.

The spelling of 121110289 in words is "one hundred twenty-one million, one hundred ten thousand, two hundred eighty-nine".