411320221 has 4 divisors (see below), whose sum is σ = 442960252. Its totient is φ = 379680192.

The previous prime is 411320207. The next prime is 411320233. The reversal of 411320221 is 122023114.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151659225 + 259660996 = 12315^2 + 16114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-411320221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 411320195 and 411320204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411320281) 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, 15819996 + ... + 15820021.

It is an arithmetic number, because the mean of its divisors is an integer number (110740063).

Almost surely, 2^411320221 is an apocalyptic number.

It is an amenable number.

411320221 is a deficient number, since it is larger than the sum of its proper divisors (31640031).

411320221 is a wasteful number, since it uses less digits than its factorization.

411320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31640030.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 411320221 is about 20281.0310635332. The cubic root of 411320221 is about 743.6924173954.

Adding to 411320221 its reverse (122023114), we get a palindrome (533343335).

The spelling of 411320221 in words is "four hundred eleven million, three hundred twenty thousand, two hundred twenty-one".