221001102043443 has 40 divisors (see below), whose sum is σ = 341441147684736. Its totient is φ = 142307686684800.

The previous prime is 221001102043439. The next prime is 221001102043487. The reversal of 221001102043443 is 344340201100122.

221001102043443 is a `hidden beast` number, since 2 + 2 + 1 + 0 + 0 + 1 + 10 + 204 + 3 + 443 = 666.

It is not a de Polignac number, because 221001102043443 - 2² = 221001102043439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (221001102143443) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83157396 + ... + 85773857.

Almost surely, 2^{221001102043443} is an apocalyptic number.

221001102043443 is a deficient number, since it is larger than the sum of its proper divisors (120440045641293).

221001102043443 is a wasteful number, since it uses less digits than its factorization.

221001102043443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168931817 (or 168931808 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 221001102043443 its reverse (344340201100122), we get a palindrome (565341303143565).

The spelling of 221001102043443 in words is "two hundred twenty-one trillion, one billion, one hundred two million, forty-three thousand, four hundred forty-three".