6221191 has 2 divisors, whose sum is σ = 6221192. Its totient is φ = 6221190.

The previous prime is 6221183. The next prime is 6221203. The reversal of 6221191 is 1911226.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6221191 - 2³ = 6221183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6221101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110595 + 3110596.

It is an arithmetic number, because the mean of its divisors is an integer number (3110596).

Almost surely, 2^6221191 is an apocalyptic number.

6221191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221191 is an equidigital number, since it uses as much as digits as its factorization.

6221191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 22.

The square root of 6221191 is about 2494.2315449853. The cubic root of 6221191 is about 183.9181169215.

The spelling of 6221191 in words is "six million, two hundred twenty-one thousand, one hundred ninety-one".