44444313012221 has 2 divisors, whose sum is σ = 44444313012222. Its totient is φ = 44444313012220.

The previous prime is 44444313012119. The next prime is 44444313012283. The reversal of 44444313012221 is 12221031344444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34140123132025 + 10304189880196 = 5842955^2 + 3210014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44444313012221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44444313012721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22222156506110 + 22222156506111.

It is an arithmetic number, because the mean of its divisors is an integer number (22222156506111).

Almost surely, 2^{44444313012221} is an apocalyptic number.

It is an amenable number.

44444313012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44444313012221 is an equidigital number, since it uses as much as digits as its factorization.

44444313012221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 44444313012221 its reverse (12221031344444), we get a palindrome (56665344356665).

The spelling of 44444313012221 in words is "forty-four trillion, four hundred forty-four billion, three hundred thirteen million, twelve thousand, two hundred twenty-one".