1441220420021 has 4 divisors (see below), whose sum is σ = 1487711401344. Its totient is φ = 1394729438700.

The previous prime is 1441220420011. The next prime is 1441220420033. The reversal of 1441220420021 is 1200240221441.

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 1441220420021 - 2²² = 1441216225717 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 (1441220420011) 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, 23245490615 + ... + 23245490676.

It is an arithmetic number, because the mean of its divisors is an integer number (371927850336).

Almost surely, 2^{1441220420021} is an apocalyptic number.

It is an amenable number.

1441220420021 is a deficient number, since it is larger than the sum of its proper divisors (46490981323).

1441220420021 is an equidigital number, since it uses as much as digits as its factorization.

1441220420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46490981322.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1441220420021 its reverse (1200240221441), we get a palindrome (2641460641462).

The spelling of 1441220420021 in words is "one trillion, four hundred forty-one billion, two hundred twenty million, four hundred twenty thousand, twenty-one".