10021100321 has 4 divisors (see below), whose sum is σ = 10265517444. Its totient is φ = 9776683200.

The previous prime is 10021100291. The next prime is 10021100339. The reversal of 10021100321 is 12300112001.

10021100321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1285581025 + 8735519296 = 35855^2 + 93464^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021100321 - 2¹⁴ = 10021083937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021100351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122208500 + ... + 122208581.

It is an arithmetic number, because the mean of its divisors is an integer number (2566379361).

Almost surely, 2^10021100321 is an apocalyptic number.

It is an amenable number.

10021100321 is a deficient number, since it is larger than the sum of its proper divisors (244417123).

10021100321 is an equidigital number, since it uses as much as digits as its factorization.

10021100321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244417122.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10021100321 its reverse (12300112001), we get a palindrome (22321212322).

The spelling of 10021100321 in words is "ten billion, twenty-one million, one hundred thousand, three hundred twenty-one".