10221011200021 has 2 divisors, whose sum is σ = 10221011200022. Its totient is φ = 10221011200020.

The previous prime is 10221011200009. The next prime is 10221011200051. The reversal of 10221011200021 is 12000211012201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5845442530225 + 4375568669796 = 2417735^2 + 2091786^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221011200021 - 2⁵ = 10221011199989 is a prime.

It is a super-3 number, since 3×10221011200021³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221011199974 and 10221011200010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221011200051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110505600010 + 5110505600011.

It is an arithmetic number, because the mean of its divisors is an integer number (5110505600011).

Almost surely, 2^{10221011200021} is an apocalyptic number.

It is an amenable number.

10221011200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221011200021 is an equidigital number, since it uses as much as digits as its factorization.

10221011200021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10221011200021 its reverse (12000211012201), we get a palindrome (22221222212222).

The spelling of 10221011200021 in words is "ten trillion, two hundred twenty-one billion, eleven million, two hundred thousand, twenty-one".