10210321021 has 4 divisors (see below), whose sum is σ = 10213009632. Its totient is φ = 10207632412.

The previous prime is 10210321007. The next prime is 10210321063. The reversal of 10210321021 is 12012301201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10210321021 - 2¹¹ = 10210318973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210320992 and 10210321010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210321001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1338601 + ... + 1346206.

It is an arithmetic number, because the mean of its divisors is an integer number (2553252408).

Almost surely, 2^10210321021 is an apocalyptic number.

It is an amenable number.

10210321021 is a deficient number, since it is larger than the sum of its proper divisors (2688611).

10210321021 is an equidigital number, since it uses as much as digits as its factorization.

10210321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688610.

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

Adding to 10210321021 its reverse (12012301201), we get a palindrome (22222622222).

The spelling of 10210321021 in words is "ten billion, two hundred ten million, three hundred twenty-one thousand, twenty-one".