121486289 has 2 divisors, whose sum is σ = 121486290. Its totient is φ = 121486288.

The previous prime is 121486283. The next prime is 121486291. The reversal of 121486289 is 982684121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111999889 + 9486400 = 10583^2 + 3080^2 .

It is an emirp because it is prime and its reverse (982684121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121486289 is a prime.

Together with 121486291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121486283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60743144 + 60743145.

It is an arithmetic number, because the mean of its divisors is an integer number (60743145).

Almost surely, 2^121486289 is an apocalyptic number.

It is an amenable number.

121486289 is a deficient number, since it is larger than the sum of its proper divisors (1).

121486289 is an equidigital number, since it uses as much as digits as its factorization.

121486289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 121486289 is about 11022.0818813870. The cubic root of 121486289 is about 495.2704558825.

The spelling of 121486289 in words is "one hundred twenty-one million, four hundred eighty-six thousand, two hundred eighty-nine".