12320221001331 has 4 divisors (see below), whose sum is σ = 16426961335112. Its totient is φ = 8213480667552.

The previous prime is 12320221001323. The next prime is 12320221001351. The reversal of 12320221001331 is 13310012202321.

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

It is not a de Polignac number, because 12320221001331 - 2³ = 12320221001323 is a prime.

It is a super-2 number, since 2×12320221001331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320221001298 and 12320221001307.

It is not an unprimeable number, because it can be changed into a prime (12320221001311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053370166886 + ... + 2053370166891.

It is an arithmetic number, because the mean of its divisors is an integer number (4106740333778).

Almost surely, 2^{12320221001331} is an apocalyptic number.

12320221001331 is a deficient number, since it is larger than the sum of its proper divisors (4106740333781).

12320221001331 is an equidigital number, since it uses as much as digits as its factorization.

12320221001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106740333780.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12320221001331 its reverse (13310012202321), we get a palindrome (25630233203652).

The spelling of 12320221001331 in words is "twelve trillion, three hundred twenty billion, two hundred twenty-one million, one thousand, three hundred thirty-one".