221135441443 has 16 divisors (see below), whose sum is σ = 255402864640. Its totient is φ = 187538270976.

The previous prime is 221135441389. The next prime is 221135441467. The reversal of 221135441443 is 344144531122.

It is not a de Polignac number, because 221135441443 - 2³³ = 212545506851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221135441399 and 221135441408.

It is not an unprimeable number, because it can be changed into a prime (221135441243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495230 + ... + 2582332.

It is an arithmetic number, because the mean of its divisors is an integer number (15962679040).

Almost surely, 2^221135441443 is an apocalyptic number.

221135441443 is a deficient number, since it is larger than the sum of its proper divisors (34267423197).

221135441443 is an equidigital number, since it uses as much as digits as its factorization.

221135441443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90946.

The product of its digits is 46080, while the sum is 34.

Adding to 221135441443 its reverse (344144531122), we get a palindrome (565279972565).

The spelling of 221135441443 in words is "two hundred twenty-one billion, one hundred thirty-five million, four hundred forty-one thousand, four hundred forty-three".