6622105021 has 32 divisors (see below), whose sum is σ = 8141690880. Its totient is φ = 5264179200.

The previous prime is 6622105003. The next prime is 6622105027. The reversal of 6622105021 is 1205012266.

It is not a de Polignac number, because 6622105021 - 2⁹ = 6622104509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622105027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 858301 + ... + 865981.

It is an arithmetic number, because the mean of its divisors is an integer number (254427840).

Almost surely, 2^6622105021 is an apocalyptic number.

It is an amenable number.

6622105021 is a deficient number, since it is larger than the sum of its proper divisors (1519585859).

6622105021 is a wasteful number, since it uses less digits than its factorization.

6622105021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7885.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 6622105021 is about 81376.3173226707. The cubic root of 6622105021 is about 1877.8692682372.

Adding to 6622105021 its reverse (1205012266), we get a palindrome (7827117287).

The spelling of 6622105021 in words is "six billion, six hundred twenty-two million, one hundred five thousand, twenty-one".