6221331 has 12 divisors (see below), whose sum is σ = 9011808. Its totient is φ = 4135824.

The previous prime is 6221317. The next prime is 6221377. The reversal of 6221331 is 1331226.

6221331 is a `hidden beast` number, since 622 + 13 + 31 = 666.

It is not a de Polignac number, because 6221331 - 2⁷ = 6221203 is a prime.

It is a super-2 number, since 2×6221331² = 77409918823122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6221311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3421 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (750984).

Almost surely, 2^6221331 is an apocalyptic number.

6221331 is a deficient number, since it is larger than the sum of its proper divisors (2790477).

6221331 is a wasteful number, since it uses less digits than its factorization.

6221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1959 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 6221331 is about 2494.2596095836. The cubic root of 6221331 is about 183.9194965256.

Adding to 6221331 its reverse (1331226), we get a palindrome (7552557).

It can be divided in two parts, 622 and 1331, that added together give a triangular number (1953 = T₆₂).

The spelling of 6221331 in words is "six million, two hundred twenty-one thousand, three hundred thirty-one".