12312020201321 has 16 divisors (see below), whose sum is σ = 12631705658880. Its totient is φ = 11996431827840.

The previous prime is 12312020201311. The next prime is 12312020201333. The reversal of 12312020201321 is 12310202021321.

It is a cyclic number.

It is not a de Polignac number, because 12312020201321 - 2²² = 12312016007017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312020201293 and 12312020201302.

It is not an unprimeable number, because it can be changed into a prime (12312020201311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152579816 + ... + 152660486.

It is an arithmetic number, because the mean of its divisors is an integer number (789481603680).

Almost surely, 2^{12312020201321} is an apocalyptic number.

It is an amenable number.

12312020201321 is a deficient number, since it is larger than the sum of its proper divisors (319685457559).

12312020201321 is an equidigital number, since it uses as much as digits as its factorization.

12312020201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106016.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12312020201321 its reverse (12310202021321), we get a palindrome (24622222222642).

The spelling of 12312020201321 in words is "twelve trillion, three hundred twelve billion, twenty million, two hundred one thousand, three hundred twenty-one".