6222721236 has 48 divisors (see below), whose sum is σ = 15290775360. Its totient is φ = 1964183040.

The previous prime is 6222721223. The next prime is 6222721237. The reversal of 6222721236 is 6321272226.

It is a junction number, because it is equal to n+sod(n) for n = 6222721197 and 6222721206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6222721237) 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 15 ways as a sum of consecutive naturals, for example, 655806 + ... + 665226.

It is an arithmetic number, because the mean of its divisors is an integer number (318557820).

Almost surely, 2^6222721236 is an apocalyptic number.

It is an amenable number.

6222721236 is an abundant number, since it is smaller than the sum of its proper divisors (9068054124).

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

6222721236 is a wasteful number, since it uses less digits than its factorization.

6222721236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12344 (or 12342 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 6222721236 is about 78884.2267883764. The cubic root of 6222721236 is about 1839.3319522674.

The spelling of 6222721236 in words is "six billion, two hundred twenty-two million, seven hundred twenty-one thousand, two hundred thirty-six".