411215221 has 2 divisors, whose sum is σ = 411215222. Its totient is φ = 411215220.

The previous prime is 411215209. The next prime is 411215263. The reversal of 411215221 is 122512114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383768100 + 27447121 = 19590^2 + 5239^2 .

It is a cyclic number.

It is not a de Polignac number, because 411215221 - 2⁹ = 411214709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411215201) 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, 205607610 + 205607611.

It is an arithmetic number, because the mean of its divisors is an integer number (205607611).

Almost surely, 2^411215221 is an apocalyptic number.

It is an amenable number.

411215221 is a deficient number, since it is larger than the sum of its proper divisors (1).

411215221 is an equidigital number, since it uses as much as digits as its factorization.

411215221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 19.

The square root of 411215221 is about 20278.4422725218. The cubic root of 411215221 is about 743.6291298436.

Adding to 411215221 its reverse (122512114), we get a palindrome (533727335).

The spelling of 411215221 in words is "four hundred eleven million, two hundred fifteen thousand, two hundred twenty-one".