121363603 has 2 divisors, whose sum is σ = 121363604. Its totient is φ = 121363602.

The previous prime is 121363601. The next prime is 121363607. The reversal of 121363603 is 306363121.

It is a weak prime.

It is an emirp because it is prime and its reverse (306363121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121363603 - 2¹ = 121363601 is a prime.

Together with 121363601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121363601) 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, 60681801 + 60681802.

It is an arithmetic number, because the mean of its divisors is an integer number (60681802).

Almost surely, 2^121363603 is an apocalyptic number.

121363603 is a deficient number, since it is larger than the sum of its proper divisors (1).

121363603 is an equidigital number, since it uses as much as digits as its factorization.

121363603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 121363603 is about 11016.5150115633. The cubic root of 121363603 is about 495.1036792654.

The spelling of 121363603 in words is "one hundred twenty-one million, three hundred sixty-three thousand, six hundred three".