12310301320021 has 4 divisors (see below), whose sum is σ = 12512109538444. Its totient is φ = 12108493101600.

The previous prime is 12310301320001. The next prime is 12310301320033. The reversal of 12310301320021 is 12002310301321.

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 2836155759921 + 9474145560100 = 1684089^2 + 3078010^2 .

It is a cyclic number.

It is not a de Polignac number, because 12310301320021 - 2²¹ = 12310299222869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310301320001) 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, 100904109120 + ... + 100904109241.

It is an arithmetic number, because the mean of its divisors is an integer number (3128027384611).

Almost surely, 2^{12310301320021} is an apocalyptic number.

It is an amenable number.

12310301320021 is a deficient number, since it is larger than the sum of its proper divisors (201808218423).

12310301320021 is an equidigital number, since it uses as much as digits as its factorization.

12310301320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201808218422.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12310301320021 its reverse (12002310301321), we get a palindrome (24312611621342).

The spelling of 12310301320021 in words is "twelve trillion, three hundred ten billion, three hundred one million, three hundred twenty thousand, twenty-one".