366233221 has 2 divisors, whose sum is σ = 366233222. Its totient is φ = 366233220.

The previous prime is 366233213. The next prime is 366233239. The reversal of 366233221 is 122332663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219484225 + 146748996 = 14815^2 + 12114^2 .

It is a cyclic number.

It is not a de Polignac number, because 366233221 - 2³ = 366233213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 366233221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366233251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183116610 + 183116611.

It is an arithmetic number, because the mean of its divisors is an integer number (183116611).

Almost surely, 2^366233221 is an apocalyptic number.

It is an amenable number.

366233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

366233221 is an equidigital number, since it uses as much as digits as its factorization.

366233221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

The square root of 366233221 is about 19137.2208274869. The cubic root of 366233221 is about 715.4609126557.

Adding to 366233221 its reverse (122332663), we get a palindrome (488565884).

The spelling of 366233221 in words is "three hundred sixty-six million, two hundred thirty-three thousand, two hundred twenty-one".