411440221 has 4 divisors (see below), whose sum is σ = 411548512. Its totient is φ = 411331932.

The previous prime is 411440201. The next prime is 411440257. The reversal of 411440221 is 122044114.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122044114 = 2 ⋅61022057.

It is a cyclic number.

It is not a de Polignac number, because 411440221 - 2⁵ = 411440189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411440201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48231 + ... + 56116.

It is an arithmetic number, because the mean of its divisors is an integer number (102887128).

Almost surely, 2^411440221 is an apocalyptic number.

It is an amenable number.

411440221 is a deficient number, since it is larger than the sum of its proper divisors (108291).

411440221 is a wasteful number, since it uses less digits than its factorization.

411440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108290.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 411440221 is about 20283.9892772600. The cubic root of 411440221 is about 743.7647328391.

Adding to 411440221 its reverse (122044114), we get a palindrome (533484335).

The spelling of 411440221 in words is "four hundred eleven million, four hundred forty thousand, two hundred twenty-one".