320221143221213 has 8 divisors (see below), whose sum is σ = 344854146569688. Its totient is φ = 295588226689344.

The previous prime is 320221143221051. The next prime is 320221143221219. The reversal of 320221143221213 is 312122341122023.

It can be written as a sum of positive squares in 4 ways, for example, as 37167336636004 + 283053806585209 = 6096502^2 + 16824203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320221143221213 - 2¹⁶ = 320221143155677 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 (320221143221219) 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 7 ways as a sum of consecutive naturals, for example, 13940606 + ... + 28892607.

It is an arithmetic number, because the mean of its divisors is an integer number (43106768321211).

Almost surely, 2^{320221143221213} is an apocalyptic number.

It is an amenable number.

320221143221213 is a deficient number, since it is larger than the sum of its proper divisors (24633003348475).

320221143221213 is a wasteful number, since it uses less digits than its factorization.

320221143221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43408303.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 320221143221213 its reverse (312122341122023), we get a palindrome (632343484343236).

The spelling of 320221143221213 in words is "three hundred twenty trillion, two hundred twenty-one billion, one hundred forty-three million, two hundred twenty-one thousand, two hundred thirteen".