411221205503 has 4 divisors (see below), whose sum is σ = 411238363008. Its totient is φ = 411204048000.

The previous prime is 411221205467. The next prime is 411221205529. The reversal of 411221205503 is 305502122114.

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

It is a cyclic number.

It is not a de Polignac number, because 411221205503 - 2²² = 411217011199 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 (411221205533) 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, 8542751 + ... + 8590752.

It is an arithmetic number, because the mean of its divisors is an integer number (102809590752).

Almost surely, 2^411221205503 is an apocalyptic number.

411221205503 is a deficient number, since it is larger than the sum of its proper divisors (17157505).

411221205503 is a wasteful number, since it uses less digits than its factorization.

411221205503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157504.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 411221205503 its reverse (305502122114), we get a palindrome (716723327617).

The spelling of 411221205503 in words is "four hundred eleven billion, two hundred twenty-one million, two hundred five thousand, five hundred three".