221300303957 has 2 divisors, whose sum is σ = 221300303958. Its totient is φ = 221300303956.

The previous prime is 221300303909. The next prime is 221300304047. The reversal of 221300303957 is 759303003122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220560790321 + 739513636 = 469639^2 + 27194^2 .

It is a cyclic number.

It is not a de Polignac number, because 221300303957 - 2⁸ = 221300303701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221300303557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110650151978 + 110650151979.

It is an arithmetic number, because the mean of its divisors is an integer number (110650151979).

Almost surely, 2^221300303957 is an apocalyptic number.

It is an amenable number.

221300303957 is a deficient number, since it is larger than the sum of its proper divisors (1).

221300303957 is an equidigital number, since it uses as much as digits as its factorization.

221300303957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 35.

The spelling of 221300303957 in words is "two hundred twenty-one billion, three hundred million, three hundred three thousand, nine hundred fifty-seven".