10021000201021 has 4 divisors (see below), whose sum is σ = 10021045639072. Its totient is φ = 10020954762972.

The previous prime is 10021000200983. The next prime is 10021000201057. The reversal of 10021000201021 is 12010200012001.

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 10021000201021 - 2¹⁹ = 10020999676733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021000200989 and 10021000201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021000261021) 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, 22386591 + ... + 22829836.

It is an arithmetic number, because the mean of its divisors is an integer number (2505261409768).

Almost surely, 2^{10021000201021} is an apocalyptic number.

It is an amenable number.

10021000201021 is a deficient number, since it is larger than the sum of its proper divisors (45438051).

10021000201021 is an equidigital number, since it uses as much as digits as its factorization.

10021000201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45438050.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10021000201021 its reverse (12010200012001), we get a palindrome (22031200213022).

The spelling of 10021000201021 in words is "ten trillion, twenty-one billion, two hundred one thousand, twenty-one".