10021011212221 has 8 divisors (see below), whose sum is σ = 10081307839680. Its totient is φ = 9960718044288.

The previous prime is 10021011212171. The next prime is 10021011212257. The reversal of 10021011212221 is 12221211012001.

10021011212221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10021011212221 - 2³³ = 10012421277629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021011212195 and 10021011212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021011212281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5067885 + ... + 6762061.

It is an arithmetic number, because the mean of its divisors is an integer number (1260163479960).

Almost surely, 2^{10021011212221} is an apocalyptic number.

It is an amenable number.

10021011212221 is a deficient number, since it is larger than the sum of its proper divisors (60296627459).

10021011212221 is a wasteful number, since it uses less digits than its factorization.

10021011212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729763.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10021011212221 its reverse (12221211012001), we get a palindrome (22242222224222).

The spelling of 10021011212221 in words is "ten trillion, twenty-one billion, eleven million, two hundred twelve thousand, two hundred twenty-one".