1441320021 has 32 divisors (see below), whose sum is σ = 2153606400. Its totient is φ = 952680960.

The previous prime is 1441320019. The next prime is 1441320037. The reversal of 1441320021 is 1200231441.

1441320021 is a `hidden beast` number, since 1 + 441 + 3 + 200 + 21 = 666.

It is not a de Polignac number, because 1441320021 - 2¹ = 1441320019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1441319976 and 1441320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441320121) 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, 2335705 + ... + 2336321.

It is an arithmetic number, because the mean of its divisors is an integer number (67300200).

Almost surely, 2^1441320021 is an apocalyptic number.

It is an amenable number.

1441320021 is a deficient number, since it is larger than the sum of its proper divisors (712286379).

1441320021 is a wasteful number, since it uses less digits than its factorization.

1441320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1441320021 is about 37964.7207417623. The cubic root of 1441320021 is about 1129.5881813100.

Adding to 1441320021 its reverse (1200231441), we get a palindrome (2641551462).

The spelling of 1441320021 in words is "one billion, four hundred forty-one million, three hundred twenty thousand, twenty-one".