102503121899 has 2 divisors, whose sum is σ = 102503121900. Its totient is φ = 102503121898.

The previous prime is 102503121871. The next prime is 102503121943. The reversal of 102503121899 is 998121305201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102503121899 - 2²⁸ = 102234686443 is a prime.

It is not a weakly prime, because it can be changed into another prime (102503121839) 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, 51251560949 + 51251560950.

It is an arithmetic number, because the mean of its divisors is an integer number (51251560950).

Almost surely, 2^102503121899 is an apocalyptic number.

102503121899 is a deficient number, since it is larger than the sum of its proper divisors (1).

102503121899 is an equidigital number, since it uses as much as digits as its factorization.

102503121899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 102503121899 in words is "one hundred two billion, five hundred three million, one hundred twenty-one thousand, eight hundred ninety-nine".