411551144221 has 4 divisors (see below), whose sum is σ = 470344164832. Its totient is φ = 352758123612.

The previous prime is 411551144167. The next prime is 411551144227. The reversal of 411551144221 is 122441155114.

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: 122441155114 = 2 ⋅61220577557.

It is a cyclic number.

It is not a de Polignac number, because 411551144221 - 2²⁵ = 411517589789 is a prime.

It is a super-2 number, since 2×411551144221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411551144227) 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, 29396510295 + ... + 29396510308.

It is an arithmetic number, because the mean of its divisors is an integer number (117586041208).

Almost surely, 2^411551144221 is an apocalyptic number.

It is an amenable number.

411551144221 is a deficient number, since it is larger than the sum of its proper divisors (58793020611).

411551144221 is an equidigital number, since it uses as much as digits as its factorization.

411551144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58793020610.

The product of its digits is 6400, while the sum is 31.

Adding to 411551144221 its reverse (122441155114), we get a palindrome (533992299335).

The spelling of 411551144221 in words is "four hundred eleven billion, five hundred fifty-one million, one hundred forty-four thousand, two hundred twenty-one".