121321301210303 has 4 divisors (see below), whose sum is σ = 121356355042488. Its totient is φ = 121286247378120.

The previous prime is 121321301210273. The next prime is 121321301210309. The reversal of 121321301210303 is 303012103123121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121321301210303 - 2⁸ = 121321301210047 is a prime.

It is a super-2 number, since 2×121321301210303² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321301210309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17526910901 + ... + 17526917822.

It is an arithmetic number, because the mean of its divisors is an integer number (30339088760622).

Almost surely, 2^{121321301210303} is an apocalyptic number.

121321301210303 is a deficient number, since it is larger than the sum of its proper divisors (35053832185).

121321301210303 is an equidigital number, since it uses as much as digits as its factorization.

121321301210303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35053832184.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121321301210303 its reverse (303012103123121), we get a palindrome (424333404333424).

The spelling of 121321301210303 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, three hundred one million, two hundred ten thousand, three hundred three".