6221312211 has 4 divisors (see below), whose sum is σ = 8295082952. Its totient is φ = 4147541472.

The previous prime is 6221312191. The next prime is 6221312249. The reversal of 6221312211 is 1122131226.

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

It is not a de Polignac number, because 6221312211 - 2⁶ = 6221312147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6221312011) 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, 1036885366 + ... + 1036885371.

It is an arithmetic number, because the mean of its divisors is an integer number (2073770738).

Almost surely, 2^6221312211 is an apocalyptic number.

6221312211 is a deficient number, since it is larger than the sum of its proper divisors (2073770741).

6221312211 is a wasteful number, since it uses less digits than its factorization.

6221312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073770740.

The product of its digits is 288, while the sum is 21.

The square root of 6221312211 is about 78875.2953148196. The cubic root of 6221312211 is about 1839.1931137410.

Adding to 6221312211 its reverse (1122131226), we get a palindrome (7343443437).

The spelling of 6221312211 in words is "six billion, two hundred twenty-one million, three hundred twelve thousand, two hundred eleven".