44040211021 has 2 divisors, whose sum is σ = 44040211022. Its totient is φ = 44040211020.

The previous prime is 44040211013. The next prime is 44040211031. The reversal of 44040211021 is 12011204044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43383057796 + 657153225 = 208286^2 + 25635^2 .

It is a cyclic number.

It is not a de Polignac number, because 44040211021 - 2³ = 44040211013 is a prime.

It is a super-4 number, since 4×44040211021⁴ (a number of 44 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44040211021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44040211031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22020105510 + 22020105511.

It is an arithmetic number, because the mean of its divisors is an integer number (22020105511).

Almost surely, 2^44040211021 is an apocalyptic number.

It is an amenable number.

44040211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

44040211021 is an equidigital number, since it uses as much as digits as its factorization.

44040211021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 44040211021 its reverse (12011204044), we get a palindrome (56051415065).

The spelling of 44040211021 in words is "forty-four billion, forty million, two hundred eleven thousand, twenty-one".