44451322021 has 2 divisors, whose sum is σ = 44451322022. Its totient is φ = 44451322020.

The previous prime is 44451322009. The next prime is 44451322031. The reversal of 44451322021 is 12022315444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26864849025 + 17586472996 = 163905^2 + 132614^2 .

It is a cyclic number.

It is not a de Polignac number, because 44451322021 - 2¹⁹ = 44450797733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44451322031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22225661010 + 22225661011.

It is an arithmetic number, because the mean of its divisors is an integer number (22225661011).

Almost surely, 2^44451322021 is an apocalyptic number.

It is an amenable number.

44451322021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44451322021 is an equidigital number, since it uses as much as digits as its factorization.

44451322021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 44451322021 its reverse (12022315444), we get a palindrome (56473637465).

The spelling of 44451322021 in words is "forty-four billion, four hundred fifty-one million, three hundred twenty-two thousand, twenty-one".