4955885996221 has 2 divisors, whose sum is σ = 4955885996222. Its totient is φ = 4955885996220.

The previous prime is 4955885996111. The next prime is 4955885996267. The reversal of 4955885996221 is 1226995885594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3945983602500 + 1009902393721 = 1986450^2 + 1004939^2 .

It is a cyclic number.

It is not a de Polignac number, because 4955885996221 - 2¹¹ = 4955885994173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4955885996021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2477942998110 + 2477942998111.

It is an arithmetic number, because the mean of its divisors is an integer number (2477942998111).

Almost surely, 2^{4955885996221} is an apocalyptic number.

It is an amenable number.

4955885996221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4955885996221 is an equidigital number, since it uses as much as digits as its factorization.

4955885996221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872000, while the sum is 73.

The spelling of 4955885996221 in words is "four trillion, nine hundred fifty-five billion, eight hundred eighty-five million, nine hundred ninety-six thousand, two hundred twenty-one".