40221342102173 has 2 divisors, whose sum is σ = 40221342102174. Its totient is φ = 40221342102172.

The previous prime is 40221342102169. The next prime is 40221342102209. The reversal of 40221342102173 is 37120124312204.

40221342102173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29334496673689 + 10886845428484 = 5416133^2 + 3299522^2 .

It is a cyclic number.

It is not a de Polignac number, because 40221342102173 - 2² = 40221342102169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40221342102163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110671051086 + 20110671051087.

It is an arithmetic number, because the mean of its divisors is an integer number (20110671051087).

Almost surely, 2^{40221342102173} is an apocalyptic number.

It is an amenable number.

40221342102173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221342102173 is an equidigital number, since it uses as much as digits as its factorization.

40221342102173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 40221342102173 its reverse (37120124312204), we get a palindrome (77341466414377).

The spelling of 40221342102173 in words is "forty trillion, two hundred twenty-one billion, three hundred forty-two million, one hundred two thousand, one hundred seventy-three".