10021110221021 has 2 divisors, whose sum is σ = 10021110221022. Its totient is φ = 10021110221020.

The previous prime is 10021110220999. The next prime is 10021110221033. The reversal of 10021110221021 is 12012201112001.

10021110221021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7153811464921 + 2867298756100 = 2674661^2 + 1693310^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021110221021 - 2¹⁰ = 10021110219997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021110220987 and 10021110221005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021110251021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010555110510 + 5010555110511.

It is an arithmetic number, because the mean of its divisors is an integer number (5010555110511).

Almost surely, 2^{10021110221021} is an apocalyptic number.

It is an amenable number.

10021110221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021110221021 is an equidigital number, since it uses as much as digits as its factorization.

10021110221021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10021110221021 its reverse (12012201112001), we get a palindrome (22033311333022).

The spelling of 10021110221021 in words is "ten trillion, twenty-one billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".