6721056211 has 8 divisors (see below), whose sum is σ = 7021659600. Its totient is φ = 6425042400.

The previous prime is 6721056203. The next prime is 6721056229. The reversal of 6721056211 is 1126501276.

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 6721056211 - 2³ = 6721056203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6721056271) 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 in 7 ways as a sum of consecutive naturals, for example, 1144401 + ... + 1150258.

It is an arithmetic number, because the mean of its divisors is an integer number (877707450).

Almost surely, 2^6721056211 is an apocalyptic number.

6721056211 is a deficient number, since it is larger than the sum of its proper divisors (300603389).

6721056211 is a wasteful number, since it uses less digits than its factorization.

6721056211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294789.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 6721056211 is about 81982.0481020083. The cubic root of 6721056211 is about 1887.1764536195.

Adding to 6721056211 its reverse (1126501276), we get a palindrome (7847557487).

The spelling of 6721056211 in words is "six billion, seven hundred twenty-one million, fifty-six thousand, two hundred eleven".