121280297 has 2 divisors, whose sum is σ = 121280298. Its totient is φ = 121280296.

The previous prime is 121280281. The next prime is 121280303. The reversal of 121280297 is 792082121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81072016 + 40208281 = 9004^2 + 6341^2 .

It is an emirp because it is prime and its reverse (792082121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121280297 - 2⁴ = 121280281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121282297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60640148 + 60640149.

It is an arithmetic number, because the mean of its divisors is an integer number (60640149).

Almost surely, 2^121280297 is an apocalyptic number.

It is an amenable number.

121280297 is a deficient number, since it is larger than the sum of its proper divisors (1).

121280297 is an equidigital number, since it uses as much as digits as its factorization.

121280297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 121280297 is about 11012.7334027479. The cubic root of 121280297 is about 494.9903708633.

The spelling of 121280297 in words is "one hundred twenty-one million, two hundred eighty thousand, two hundred ninety-seven".