1443110020421 has 4 divisors (see below), whose sum is σ = 1443645897612. Its totient is φ = 1442574143232.

The previous prime is 1443110020399. The next prime is 1443110020439. The reversal of 1443110020421 is 1240200113441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 591420983521 + 851689036900 = 769039^2 + 922870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443110020421 - 2⁶ = 1443110020357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443110022421) 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, 267934556 + ... + 267939941.

It is an arithmetic number, because the mean of its divisors is an integer number (360911474403).

Almost surely, 2^{1443110020421} is an apocalyptic number.

It is an amenable number.

1443110020421 is a deficient number, since it is larger than the sum of its proper divisors (535877191).

1443110020421 is an equidigital number, since it uses as much as digits as its factorization.

1443110020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535877190.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1443110020421 its reverse (1240200113441), we get a palindrome (2683310133862).

The spelling of 1443110020421 in words is "one trillion, four hundred forty-three billion, one hundred ten million, twenty thousand, four hundred twenty-one".