121118243 has 2 divisors, whose sum is σ = 121118244. Its totient is φ = 121118242.

The previous prime is 121118237. The next prime is 121118267. The reversal of 121118243 is 342811121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121118243 - 2⁴ = 121118227 is a prime.

It is not a weakly prime, because it can be changed into another prime (121118203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60559121 + 60559122.

It is an arithmetic number, because the mean of its divisors is an integer number (60559122).

Almost surely, 2^121118243 is an apocalyptic number.

121118243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121118243 is an equidigital number, since it uses as much as digits as its factorization.

121118243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 23.

The square root of 121118243 is about 11005.3733694046. The cubic root of 121118243 is about 494.7698048803.

Adding to 121118243 its reverse (342811121), we get a palindrome (463929364).

The spelling of 121118243 in words is "one hundred twenty-one million, one hundred eighteen thousand, two hundred forty-three".