121312302303 has 16 divisors (see below), whose sum is σ = 164519683200. Its totient is φ = 79490368800.

The previous prime is 121312302283. The next prime is 121312302317. The reversal of 121312302303 is 303203213121.

It is not a de Polignac number, because 121312302303 - 2⁵ = 121312302271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121312302303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312302343) 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 in 15 ways as a sum of consecutive naturals, for example, 1023708 + ... + 1136046.

It is an arithmetic number, because the mean of its divisors is an integer number (10282480200).

Almost surely, 2^121312302303 is an apocalyptic number.

121312302303 is a deficient number, since it is larger than the sum of its proper divisors (43207380897).

121312302303 is a wasteful number, since it uses less digits than its factorization.

121312302303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118502.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 121312302303 its reverse (303203213121), we get a palindrome (424515515424).

The spelling of 121312302303 in words is "one hundred twenty-one billion, three hundred twelve million, three hundred two thousand, three hundred three".