10001303213221 has 8 divisors (see below), whose sum is σ = 10104682295960. Its totient is φ = 9897929699328.

The previous prime is 10001303213203. The next prime is 10001303213227. The reversal of 10001303213221 is 12231230310001.

It can be written as a sum of positive squares in 4 ways, for example, as 3050244785025 + 6951058428196 = 1746495^2 + 2636486^2 .

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 10001303213221 - 2⁹ = 10001303212709 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 (10001303213227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2267695 + ... + 5014483.

It is an arithmetic number, because the mean of its divisors is an integer number (1263085286995).

Almost surely, 2^{10001303213221} is an apocalyptic number.

It is an amenable number.

10001303213221 is a deficient number, since it is larger than the sum of its proper divisors (103379082739).

10001303213221 is an equidigital number, since it uses as much as digits as its factorization.

10001303213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784423.

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

Adding to 10001303213221 its reverse (12231230310001), we get a palindrome (22232533523222).

The spelling of 10001303213221 in words is "ten trillion, one billion, three hundred three million, two hundred thirteen thousand, two hundred twenty-one".