411001221 has 4 divisors (see below), whose sum is σ = 548001632. Its totient is φ = 274000812.

The previous prime is 411001211. The next prime is 411001259. The reversal of 411001221 is 122100114.

It is a happy number.

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.

It is not a de Polignac number, because 411001221 - 2¹³ = 410993029 is a prime.

It is a Duffinian number.

411001221 is a modest number, since divided by 1221 gives 411 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 411001197 and 411001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411001211) 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, 68500201 + ... + 68500206.

It is an arithmetic number, because the mean of its divisors is an integer number (137000408).

Almost surely, 2^411001221 is an apocalyptic number.

It is an amenable number.

411001221 is a deficient number, since it is larger than the sum of its proper divisors (137000411).

411001221 is a wasteful number, since it uses less digits than its factorization.

411001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137000410.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 411001221 is about 20273.1650464352. The cubic root of 411001221 is about 743.5001104242.

Adding to 411001221 its reverse (122100114), we get a palindrome (533101335).

The spelling of 411001221 in words is "four hundred eleven million, one thousand, two hundred twenty-one".