121123203313 has 16 divisors (see below), whose sum is σ = 145020589056.
Its totient is φ = 98910306000.
The previous prime is 121123203281. The next prime is 121123203353. The reversal of 121123203313 is 313302321121.
Adding to 121123203313 its reverse (313302321121), we get a palindrome (434425524434).
It is a cyclic number.
It is not a de Polignac number, because 121123203313 - 25 = 121123203281 is a prime.
It is not an unprimeable number, because it can be changed into a prime (121123203353) 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 in 15 ways as a sum of consecutive naturals, for example, 1458231 + ... + 1539052.
It is an arithmetic number, because the mean of its divisors is an integer number (9063786816).
Almost surely, 2121123203313 is an apocalyptic number.
It is an amenable number.
121123203313 is a deficient number, since it is larger than the sum of its proper divisors (23897385743).
121123203313 is a wasteful number, since it uses less digits than its factorization.
121123203313 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2997564.
The product of its (nonzero) digits is 648, while the sum is 22.
The spelling of 121123203313 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred three thousand, three hundred thirteen".