1441355221 has 2 divisors, whose sum is σ = 1441355222. Its totient is φ = 1441355220.

The previous prime is 1441355213. The next prime is 1441355263. The reversal of 1441355221 is 1225531441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1386743121 + 54612100 = 37239^2 + 7390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1441355221 - 2³ = 1441355213 is a prime.

It is a super-3 number, since 3×1441355221³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1441355221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1441355281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720677610 + 720677611.

It is an arithmetic number, because the mean of its divisors is an integer number (720677611).

Almost surely, 2^1441355221 is an apocalyptic number.

It is an amenable number.

1441355221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1441355221 is an equidigital number, since it uses as much as digits as its factorization.

1441355221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The square root of 1441355221 is about 37965.1843272228. The cubic root of 1441355221 is about 1129.5973768575.

Adding to 1441355221 its reverse (1225531441), we get a palindrome (2666886662).

The spelling of 1441355221 in words is "one billion, four hundred forty-one million, three hundred fifty-five thousand, two hundred twenty-one".