44321022401221 has 2 divisors, whose sum is σ = 44321022401222. Its totient is φ = 44321022401220.

The previous prime is 44321022401197. The next prime is 44321022401363. The reversal of 44321022401221 is 12210422012344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43187832345025 + 1133190056196 = 6571745^2 + 1064514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44321022401221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44321022401221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44321022401521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22160511200610 + 22160511200611.

It is an arithmetic number, because the mean of its divisors is an integer number (22160511200611).

Almost surely, 2^{44321022401221} is an apocalyptic number.

It is an amenable number.

44321022401221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44321022401221 is an equidigital number, since it uses as much as digits as its factorization.

44321022401221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 44321022401221 its reverse (12210422012344), we get a palindrome (56531444413565).

The spelling of 44321022401221 in words is "forty-four trillion, three hundred twenty-one billion, twenty-two million, four hundred one thousand, two hundred twenty-one".