45044240045221 has 2 divisors, whose sum is σ = 45044240045222. Its totient is φ = 45044240045220.

The previous prime is 45044240045219. The next prime is 45044240045279. The reversal of 45044240045221 is 12254004244054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26228338492321 + 18815901552900 = 5121361^2 + 4337730^2 .

It is a cyclic number.

It is not a de Polignac number, because 45044240045221 - 2¹ = 45044240045219 is a prime.

It is a super-2 number, since 2×45044240045221² (a number of 28 digits) contains 22 as substring.

Together with 45044240045219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45044240045201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22522120022610 + 22522120022611.

It is an arithmetic number, because the mean of its divisors is an integer number (22522120022611).

Almost surely, 2^{45044240045221} is an apocalyptic number.

It is an amenable number.

45044240045221 is a deficient number, since it is larger than the sum of its proper divisors (1).

45044240045221 is an equidigital number, since it uses as much as digits as its factorization.

45044240045221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 45044240045221 its reverse (12254004244054), we get a palindrome (57298244289275).

The spelling of 45044240045221 in words is "forty-five trillion, forty-four billion, two hundred forty million, forty-five thousand, two hundred twenty-one".