10021002121021 has 16 divisors (see below), whose sum is σ = 10114225490880. Its totient is φ = 9928089751680.

The previous prime is 10021002121019. The next prime is 10021002121037. The reversal of 10021002121021 is 12012120012001.

10021002121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10021002121021 - 2¹ = 10021002121019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021002120992 and 10021002121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021002121421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360414906 + ... + 360442708.

It is an arithmetic number, because the mean of its divisors is an integer number (632139093180).

Almost surely, 2^{10021002121021} is an apocalyptic number.

It is an amenable number.

10021002121021 is a deficient number, since it is larger than the sum of its proper divisors (93223369859).

10021002121021 is a wasteful number, since it uses less digits than its factorization.

10021002121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33276.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10021002121021 its reverse (12012120012001), we get a palindrome (22033122133022).

The spelling of 10021002121021 in words is "ten trillion, twenty-one billion, two million, one hundred twenty-one thousand, twenty-one".