121120117843 has 2 divisors, whose sum is σ = 121120117844. Its totient is φ = 121120117842.

The previous prime is 121120117819. The next prime is 121120117847. The reversal of 121120117843 is 348711021121.

It is a strong prime.

It is an emirp because it is prime and its reverse (348711021121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121120117843 - 2¹³ = 121120109651 is a prime.

It is not a weakly prime, because it can be changed into another prime (121120117847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560058921 + 60560058922.

It is an arithmetic number, because the mean of its divisors is an integer number (60560058922).

Almost surely, 2^121120117843 is an apocalyptic number.

121120117843 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120117843 is an equidigital number, since it uses as much as digits as its factorization.

121120117843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

Adding to 121120117843 its reverse (348711021121), we get a palindrome (469831138964).

The spelling of 121120117843 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred seventeen thousand, eight hundred forty-three".