6336231221 has 2 divisors, whose sum is σ = 6336231222. Its totient is φ = 6336231220.

The previous prime is 6336231179. The next prime is 6336231269. The reversal of 6336231221 is 1221326336.

6336231221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5319514225 + 1016716996 = 72935^2 + 31886^2 .

It is a cyclic number.

It is not a de Polignac number, because 6336231221 - 2⁶ = 6336231157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6336230221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3168115610 + 3168115611.

It is an arithmetic number, because the mean of its divisors is an integer number (3168115611).

Almost surely, 2^6336231221 is an apocalyptic number.

It is an amenable number.

6336231221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6336231221 is an equidigital number, since it uses as much as digits as its factorization.

6336231221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 6336231221 is about 79600.4473668333. The cubic root of 6336231221 is about 1850.4485127296.

Adding to 6336231221 its reverse (1221326336), we get a palindrome (7557557557).

The spelling of 6336231221 in words is "six billion, three hundred thirty-six million, two hundred thirty-one thousand, two hundred twenty-one".