9120127210221 has 8 divisors (see below), whose sum is σ = 12173941043680. Its totient is φ = 6073199091792.

The previous prime is 9120127210217. The next prime is 9120127210231. The reversal of 9120127210221 is 1220127210219.

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

It is not a de Polignac number, because 9120127210221 - 2² = 9120127210217 is a prime.

It is a super-2 number, since 2×9120127210221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9120127210231) 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, 1721425666 + ... + 1721430963.

It is an arithmetic number, because the mean of its divisors is an integer number (1521742630460).

Almost surely, 2^{9120127210221} is an apocalyptic number.

It is an amenable number.

9120127210221 is a deficient number, since it is larger than the sum of its proper divisors (3053813833459).

9120127210221 is a wasteful number, since it uses less digits than its factorization.

9120127210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442857515.

The product of its (nonzero) digits is 2016, while the sum is 30.

The spelling of 9120127210221 in words is "nine trillion, one hundred twenty billion, one hundred twenty-seven million, two hundred ten thousand, two hundred twenty-one".