6221133220 has 24 divisors (see below), whose sum is σ = 13087045944. Its totient is φ = 2484135936.

The previous prime is 6221133209. The next prime is 6221133223. The reversal of 6221133220 is 223311226.

It can be written as a sum of positive squares in 4 ways, for example, as 1391439204 + 4829694016 = 37302^2 + 69496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6221133191 and 6221133200.

It is not an unprimeable number, because it can be changed into a prime (6221133223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258007 + ... + 281086.

It is an arithmetic number, because the mean of its divisors is an integer number (545293581).

Almost surely, 2^6221133220 is an apocalyptic number.

It is an amenable number.

6221133220 is an abundant number, since it is smaller than the sum of its proper divisors (6865912724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6221133220 is a wasteful number, since it uses less digits than its factorization.

6221133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539679 (or 539677 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 6221133220 is about 78874.1606611443. The cubic root of 6221133220 is about 1839.1754753307.

Adding to 6221133220 its reverse (223311226), we get a palindrome (6444444446).

The spelling of 6221133220 in words is "six billion, two hundred twenty-one million, one hundred thirty-three thousand, two hundred twenty".