10221202022021 has 16 divisors (see below), whose sum is σ = 10831004533440. Its totient is φ = 9618781415040.

The previous prime is 10221202022011. The next prime is 10221202022033. The reversal of 10221202022021 is 12022020212201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10221202022021 - 2¹⁸ = 10221201759877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221202022011) 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, 878315 + ... + 4605848.

It is an arithmetic number, because the mean of its divisors is an integer number (676937783340).

Almost surely, 2^{10221202022021} is an apocalyptic number.

It is an amenable number.

10221202022021 is a deficient number, since it is larger than the sum of its proper divisors (609802511419).

10221202022021 is a wasteful number, since it uses less digits than its factorization.

10221202022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484836.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10221202022021 its reverse (12022020212201), we get a palindrome (22243222234222).

The spelling of 10221202022021 in words is "ten trillion, two hundred twenty-one billion, two hundred two million, twenty-two thousand, twenty-one".