4201043443021 has 4 divisors (see below), whose sum is σ = 4290427346112. Its totient is φ = 4111659539932.

The previous prime is 4201043443007. The next prime is 4201043443063. The reversal of 4201043443021 is 1203443401024.

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 4201043443021 - 2²¹ = 4201041345869 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 (4201043443321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44691951475 + ... + 44691951568.

It is an arithmetic number, because the mean of its divisors is an integer number (1072606836528).

Almost surely, 2^{4201043443021} is an apocalyptic number.

It is an amenable number.

4201043443021 is a deficient number, since it is larger than the sum of its proper divisors (89383903091).

4201043443021 is an equidigital number, since it uses as much as digits as its factorization.

4201043443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89383903090.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 4201043443021 its reverse (1203443401024), we get a palindrome (5404486844045).

The spelling of 4201043443021 in words is "four trillion, two hundred one billion, forty-three million, four hundred forty-three thousand, twenty-one".