8884121021 has 2 divisors, whose sum is σ = 8884121022. Its totient is φ = 8884121020.

The previous prime is 8884121011. The next prime is 8884121033. The reversal of 8884121021 is 1201214888.

It is a happy number.

8884121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8265355396 + 618765625 = 90914^2 + 24875^2 .

It is a cyclic number.

It is not a de Polignac number, because 8884121021 - 2¹⁸ = 8883858877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8884121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4442060510 + 4442060511.

It is an arithmetic number, because the mean of its divisors is an integer number (4442060511).

Almost surely, 2^8884121021 is an apocalyptic number.

It is an amenable number.

8884121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8884121021 is an equidigital number, since it uses as much as digits as its factorization.

8884121021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 35.

The square root of 8884121021 is about 94255.6153287431. The cubic root of 8884121021 is about 2071.1178992100.

The spelling of 8884121021 in words is "eight billion, eight hundred eighty-four million, one hundred twenty-one thousand, twenty-one".