99910010221 has 8 divisors (see below), whose sum is σ = 115747018304. Its totient is φ = 84464039520.

The previous prime is 99910010219. The next prime is 99910010227. The reversal of 99910010221 is 12201001999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99910010221 - 2¹ = 99910010219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99910010227) 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 in 7 ways as a sum of consecutive naturals, for example, 97758795 + ... + 97759816.

It is an arithmetic number, because the mean of its divisors is an integer number (14468377288).

Almost surely, 2^99910010221 is an apocalyptic number.

It is an amenable number.

99910010221 is a deficient number, since it is larger than the sum of its proper divisors (15837008083).

99910010221 is a wasteful number, since it uses less digits than its factorization.

99910010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195518691.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 99910010221 in words is "ninety-nine billion, nine hundred ten million, ten thousand, two hundred twenty-one".