121330232503 has 2 divisors, whose sum is σ = 121330232504. Its totient is φ = 121330232502.

The previous prime is 121330232479. The next prime is 121330232537. The reversal of 121330232503 is 305232033121.

It is a weak prime.

It is an emirp because it is prime and its reverse (305232033121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121330232503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121330235503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665116251 + 60665116252.

It is an arithmetic number, because the mean of its divisors is an integer number (60665116252).

Almost surely, 2^121330232503 is an apocalyptic number.

121330232503 is a deficient number, since it is larger than the sum of its proper divisors (1).

121330232503 is an equidigital number, since it uses as much as digits as its factorization.

121330232503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 121330232503 its reverse (305232033121), we get a palindrome (426562265624).

The spelling of 121330232503 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred thirty-two thousand, five hundred three".