99103536365221 has 2 divisors, whose sum is σ = 99103536365222. Its totient is φ = 99103536365220.

The previous prime is 99103536365203. The next prime is 99103536365399. The reversal of 99103536365221 is 12256363530199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82101974708196 + 17001561657025 = 9061014^2 + 4123295^2 .

It is an emirp because it is prime and its reverse (12256363530199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99103536365221 - 2²⁹ = 99102999494309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99103536369221) 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, 49551768182610 + 49551768182611.

It is an arithmetic number, because the mean of its divisors is an integer number (49551768182611).

Almost surely, 2^{99103536365221} is an apocalyptic number.

It is an amenable number.

99103536365221 is a deficient number, since it is larger than the sum of its proper divisors (1).

99103536365221 is an equidigital number, since it uses as much as digits as its factorization.

99103536365221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7873200, while the sum is 55.

The spelling of 99103536365221 in words is "ninety-nine trillion, one hundred three billion, five hundred thirty-six million, three hundred sixty-five thousand, two hundred twenty-one".