12303313212121 has 4 divisors (see below), whose sum is σ = 12305070584244. Its totient is φ = 12301555840000.

The previous prime is 12303313212119. The next prime is 12303313212133. The reversal of 12303313212121 is 12121231330321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2696016222025 + 9607296990096 = 1641955^2 + 3099564^2 .

It is a cyclic number.

It is not a de Polignac number, because 12303313212121 - 2¹ = 12303313212119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12303313212181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878675560 + ... + 878689561.

It is an arithmetic number, because the mean of its divisors is an integer number (3076267646061).

Almost surely, 2^{12303313212121} is an apocalyptic number.

It is an amenable number.

12303313212121 is a deficient number, since it is larger than the sum of its proper divisors (1757372123).

12303313212121 is an equidigital number, since it uses as much as digits as its factorization.

12303313212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757372122.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12303313212121 its reverse (12121231330321), we get a palindrome (24424544542442).

The spelling of 12303313212121 in words is "twelve trillion, three hundred three billion, three hundred thirteen million, two hundred twelve thousand, one hundred twenty-one".