99120101000221 has 8 divisors (see below), whose sum is σ = 117186326305920. Its totient is φ = 82030428413808.

The previous prime is 99120101000171. The next prime is 99120101000237. The reversal of 99120101000221 is 12200010102199.

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

It is not a de Polignac number, because 99120101000221 - 2²³ = 99120092611613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99120101000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99120101000021) 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, 244138179601 + ... + 244138180006.

It is an arithmetic number, because the mean of its divisors is an integer number (14648290788240).

Almost surely, 2^{99120101000221} is an apocalyptic number.

It is an amenable number.

99120101000221 is a deficient number, since it is larger than the sum of its proper divisors (18066225305699).

99120101000221 is a wasteful number, since it uses less digits than its factorization.

99120101000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488276359643.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 99120101000221 in words is "ninety-nine trillion, one hundred twenty billion, one hundred one million, two hundred twenty-one", and thus it is an aban number.