121311303111303 has 16 divisors (see below), whose sum is σ = 163351580532096. Its totient is φ = 80072630618400.

The previous prime is 121311303111247. The next prime is 121311303111353. The reversal of 121311303111303 is 303111303113121.

It is not a de Polignac number, because 121311303111303 - 2⁹ = 121311303110791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311303111353) 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, 27647100 + ... + 31733022.

It is an arithmetic number, because the mean of its divisors is an integer number (10209473783256).

Almost surely, 2^{121311303111303} is an apocalyptic number.

121311303111303 is a deficient number, since it is larger than the sum of its proper divisors (42040277420793).

121311303111303 is a wasteful number, since it uses less digits than its factorization.

121311303111303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184014.

The product of its (nonzero) digits is 486, while the sum is 24.

Adding to 121311303111303 its reverse (303111303113121), we get a palindrome (424422606224424).

The spelling of 121311303111303 in words is "one hundred twenty-one trillion, three hundred eleven billion, three hundred three million, one hundred eleven thousand, three hundred three".