441145221 has 32 divisors (see below), whose sum is σ = 691200000. Its totient is φ = 247473600.

The previous prime is 441145193. The next prime is 441145231. The reversal of 441145221 is 122541144.

It is not a de Polignac number, because 441145221 - 2²³ = 432756613 is a prime.

It is a super-2 number, since 2×441145221² = 389218212022277682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 441145191 and 441145200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441145231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14155 + ... + 32903.

It is an arithmetic number, because the mean of its divisors is an integer number (21600000).

Almost surely, 2^441145221 is an apocalyptic number.

It is an amenable number.

441145221 is a deficient number, since it is larger than the sum of its proper divisors (250054779).

441145221 is a wasteful number, since it uses less digits than its factorization.

441145221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18817.

The product of its digits is 1280, while the sum is 24.

The square root of 441145221 is about 21003.4573582541. The cubic root of 441145221 is about 761.2498024433.

Adding to 441145221 its reverse (122541144), we get a palindrome (563686365).

The spelling of 441145221 in words is "four hundred forty-one million, one hundred forty-five thousand, two hundred twenty-one".