10021210321 has 2 divisors, whose sum is σ = 10021210322. Its totient is φ = 10021210320.

The previous prime is 10021210279. The next prime is 10021210399. The reversal of 10021210321 is 12301212001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9932115600 + 89094721 = 99660^2 + 9439^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021210321 - 2²⁵ = 9987655889 is a prime.

It is not a weakly prime, because it can be changed into another prime (10021210021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010605160 + 5010605161.

It is an arithmetic number, because the mean of its divisors is an integer number (5010605161).

Almost surely, 2^10021210321 is an apocalyptic number.

It is an amenable number.

10021210321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021210321 is an equidigital number, since it uses as much as digits as its factorization.

10021210321 is an evil number, because the sum of its binary digits is even.

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

Adding to 10021210321 its reverse (12301212001), we get a palindrome (22322422322).

The spelling of 10021210321 in words is "ten billion, twenty-one million, two hundred ten thousand, three hundred twenty-one".