415232221 has 2 divisors, whose sum is σ = 415232222. Its totient is φ = 415232220.

The previous prime is 415232203. The next prime is 415232227. The reversal of 415232221 is 122232514.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307300900 + 107931321 = 17530^2 + 10389^2 .

It is a cyclic number.

It is not a de Polignac number, because 415232221 - 2¹¹ = 415230173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 415232192 and 415232201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415232227) 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 as a sum of consecutive naturals, namely, 207616110 + 207616111.

It is an arithmetic number, because the mean of its divisors is an integer number (207616111).

Almost surely, 2^415232221 is an apocalyptic number.

It is an amenable number.

415232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

415232221 is an equidigital number, since it uses as much as digits as its factorization.

415232221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 22.

The square root of 415232221 is about 20377.2476306296. The cubic root of 415232221 is about 746.0426947416.

Adding to 415232221 its reverse (122232514), we get a palindrome (537464735).

The spelling of 415232221 in words is "four hundred fifteen million, two hundred thirty-two thousand, two hundred twenty-one".