411121221 has 24 divisors (see below), whose sum is σ = 671222880. Its totient is φ = 222560352.

The previous prime is 411121213. The next prime is 411121229. The reversal of 411121221 is 122121114.

It is an interprime number because it is at equal distance from previous prime (411121213) and next prime (411121229).

It is not a de Polignac number, because 411121221 - 2³ = 411121213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 411121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411121229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70806 + ... + 76391.

It is an arithmetic number, because the mean of its divisors is an integer number (27967620).

Almost surely, 2^411121221 is an apocalyptic number.

It is an amenable number.

411121221 is a deficient number, since it is larger than the sum of its proper divisors (260101659).

411121221 is a wasteful number, since it uses less digits than its factorization.

411121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147233 (or 147226 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 411121221 is about 20276.1244077856. The cubic root of 411121221 is about 743.5724632762.

Adding to 411121221 its reverse (122121114), we get a palindrome (533242335).

The spelling of 411121221 in words is "four hundred eleven million, one hundred twenty-one thousand, two hundred twenty-one".