2001441421 has 4 divisors (see below), whose sum is σ = 2287361632. Its totient is φ = 1715521212.

The previous prime is 2001441419. The next prime is 2001441443. The reversal of 2001441421 is 1241441002.

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 a cyclic number.

It is not a de Polignac number, because 2001441421 - 2¹ = 2001441419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001441461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142960095 + ... + 142960108.

It is an arithmetic number, because the mean of its divisors is an integer number (571840408).

Almost surely, 2^2001441421 is an apocalyptic number.

It is an amenable number.

2001441421 is a deficient number, since it is larger than the sum of its proper divisors (285920211).

2001441421 is an equidigital number, since it uses as much as digits as its factorization.

2001441421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285920210.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2001441421 is about 44737.4722240763. The cubic root of 2001441421 is about 1260.2236566525.

Adding to 2001441421 its reverse (1241441002), we get a palindrome (3242882423).

The spelling of 2001441421 in words is "two billion, one million, four hundred forty-one thousand, four hundred twenty-one".