99103310221 has 2 divisors, whose sum is σ = 99103310222. Its totient is φ = 99103310220.

The previous prime is 99103310219. The next prime is 99103310233. The reversal of 99103310221 is 12201330199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65436198025 + 33667112196 = 255805^2 + 183486^2 .

It is an emirp because it is prime and its reverse (12201330199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99103310221 - 2¹ = 99103310219 is a prime.

Together with 99103310219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99103310261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49551655110 + 49551655111.

It is an arithmetic number, because the mean of its divisors is an integer number (49551655111).

Almost surely, 2^99103310221 is an apocalyptic number.

It is an amenable number.

99103310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

99103310221 is an equidigital number, since it uses as much as digits as its factorization.

99103310221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 99103310221 in words is "ninety-nine billion, one hundred three million, three hundred ten thousand, two hundred twenty-one".