121982297 has 2 divisors, whose sum is σ = 121982298. Its totient is φ = 121982296.

The previous prime is 121982291. The next prime is 121982321. The reversal of 121982297 is 792289121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68823616 + 53158681 = 8296^2 + 7291^2 .

It is a cyclic number.

It is not a de Polignac number, because 121982297 - 2⁴ = 121982281 is a prime.

It is equal to p_6948077 and since 121982297 and 6948077 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (121982291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60991148 + 60991149.

It is an arithmetic number, because the mean of its divisors is an integer number (60991149).

Almost surely, 2^121982297 is an apocalyptic number.

It is an amenable number.

121982297 is a deficient number, since it is larger than the sum of its proper divisors (1).

121982297 is an equidigital number, since it uses as much as digits as its factorization.

121982297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 121982297 is about 11044.5596109578. The cubic root of 121982297 is about 495.9435758418.

The spelling of 121982297 in words is "one hundred twenty-one million, nine hundred eighty-two thousand, two hundred ninety-seven".