50660228221 has 2 divisors, whose sum is σ = 50660228222. Its totient is φ = 50660228220.

The previous prime is 50660228207. The next prime is 50660228231. The reversal of 50660228221 is 12282206605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45126504900 + 5533723321 = 212430^2 + 74389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50660228221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50660228231) 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, 25330114110 + 25330114111.

It is an arithmetic number, because the mean of its divisors is an integer number (25330114111).

Almost surely, 2^50660228221 is an apocalyptic number.

It is an amenable number.

50660228221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50660228221 is an equidigital number, since it uses as much as digits as its factorization.

50660228221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 50660228221 in words is "fifty billion, six hundred sixty million, two hundred twenty-eight thousand, two hundred twenty-one".