444441043200221 has 2 divisors, whose sum is σ = 444441043200222. Its totient is φ = 444441043200220.

The previous prime is 444441043200139. The next prime is 444441043200233. The reversal of 444441043200221 is 122002340144444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346908728736196 + 97532314464025 = 18625486^2 + 9875845^2 .

It is a cyclic number.

It is not a de Polignac number, because 444441043200221 - 2²² = 444441039005917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444441043100221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222220521600110 + 222220521600111.

It is an arithmetic number, because the mean of its divisors is an integer number (222220521600111).

Almost surely, 2^{444441043200221} is an apocalyptic number.

It is an amenable number.

444441043200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

444441043200221 is an equidigital number, since it uses as much as digits as its factorization.

444441043200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 444441043200221 its reverse (122002340144444), we get a palindrome (566443383344665).

The spelling of 444441043200221 in words is "four hundred forty-four trillion, four hundred forty-one billion, forty-three million, two hundred thousand, two hundred twenty-one".