221322444041 has 4 divisors (see below), whose sum is σ = 221323597584. Its totient is φ = 221321290500.

The previous prime is 221322444023. The next prime is 221322444047. The reversal of 221322444041 is 140444223122.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 221322444041 - 2²⁶ = 221255335177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221322443995 and 221322444013.

It is not an unprimeable number, because it can be changed into a prime (221322444047) 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, 212135 + ... + 698316.

It is an arithmetic number, because the mean of its divisors is an integer number (55330899396).

Almost surely, 2^221322444041 is an apocalyptic number.

It is an amenable number.

221322444041 is a deficient number, since it is larger than the sum of its proper divisors (1153543).

221322444041 is an equidigital number, since it uses as much as digits as its factorization.

221322444041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153542.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221322444041 its reverse (140444223122), we get a palindrome (361766667163).

The spelling of 221322444041 in words is "two hundred twenty-one billion, three hundred twenty-two million, four hundred forty-four thousand, forty-one".