9912120221101 has 8 divisors (see below), whose sum is σ = 11369033200640. Its totient is φ = 8465431192848.

The previous prime is 9912120221077. The next prime is 9912120221131. The reversal of 9912120221101 is 1011220212199.

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

It is not a de Polignac number, because 9912120221101 - 2³³ = 9903530286509 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 (9912120221131) 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 in 7 ways as a sum of consecutive naturals, for example, 2555985741 + ... + 2555989618.

It is an arithmetic number, because the mean of its divisors is an integer number (1421129150080).

Almost surely, 2^{9912120221101} is an apocalyptic number.

It is an amenable number.

9912120221101 is a deficient number, since it is larger than the sum of its proper divisors (1456912979539).

9912120221101 is a wasteful number, since it uses less digits than its factorization.

9912120221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111975643.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 9912120221101 in words is "nine trillion, nine hundred twelve billion, one hundred twenty million, two hundred twenty-one thousand, one hundred one".