13210221001 has 4 divisors (see below), whose sum is σ = 13232202004. Its totient is φ = 13188240000.

The previous prime is 13210220999. The next prime is 13210221023. The reversal of 13210221001 is 10012201231.

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 4208765625 + 9001455376 = 64875^2 + 94876^2 .

It is a cyclic number.

It is not a de Polignac number, because 13210221001 - 2¹ = 13210220999 is a prime.

It is a super-2 number, since 2×13210221001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13210221041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10989600 + ... + 10990801.

It is an arithmetic number, because the mean of its divisors is an integer number (3308050501).

Almost surely, 2^13210221001 is an apocalyptic number.

It is an amenable number.

13210221001 is a deficient number, since it is larger than the sum of its proper divisors (21981003).

13210221001 is an equidigital number, since it uses as much as digits as its factorization.

13210221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21981002.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 13210221001 its reverse (10012201231), we get a palindrome (23222422232).

The spelling of 13210221001 in words is "thirteen billion, two hundred ten million, two hundred twenty-one thousand, one".