6320211221 has 4 divisors (see below), whose sum is σ = 6343706700. Its totient is φ = 6296715744.

The previous prime is 6320211169. The next prime is 6320211229. The reversal of 6320211221 is 1221120236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1351371121 + 4968840100 = 36761^2 + 70490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6320211221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6320211193 and 6320211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6320211229) 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 3 ways as a sum of consecutive naturals, for example, 11747336 + ... + 11747873.

It is an arithmetic number, because the mean of its divisors is an integer number (1585926675).

Almost surely, 2^6320211221 is an apocalyptic number.

It is an amenable number.

6320211221 is a deficient number, since it is larger than the sum of its proper divisors (23495479).

6320211221 is a wasteful number, since it uses less digits than its factorization.

6320211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23495478.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 6320211221 is about 79499.7561065441. The cubic root of 6320211221 is about 1848.8876898689.

Adding to 6320211221 its reverse (1221120236), we get a palindrome (7541331457).

The spelling of 6320211221 in words is "six billion, three hundred twenty million, two hundred eleven thousand, two hundred twenty-one".