121430863 has 2 divisors, whose sum is σ = 121430864. Its totient is φ = 121430862.

The previous prime is 121430861. The next prime is 121430893. The reversal of 121430863 is 368034121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121430863 - 2¹ = 121430861 is a prime.

Together with 121430861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121430861) 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, 60715431 + 60715432.

It is an arithmetic number, because the mean of its divisors is an integer number (60715432).

Almost surely, 2^121430863 is an apocalyptic number.

121430863 is a deficient number, since it is larger than the sum of its proper divisors (1).

121430863 is an equidigital number, since it uses as much as digits as its factorization.

121430863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 121430863 is about 11019.5672782555. The cubic root of 121430863 is about 495.1951249234.

Adding to 121430863 its reverse (368034121), we get a palindrome (489464984).

The spelling of 121430863 in words is "one hundred twenty-one million, four hundred thirty thousand, eight hundred sixty-three".