121130320021 has 8 divisors (see below), whose sum is σ = 124809349280. Its totient is φ = 117472619088.

The previous prime is 121130320013. The next prime is 121130320039. The reversal of 121130320021 is 120023031121.

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

It is a cyclic number.

It is not a de Polignac number, because 121130320021 - 2³ = 121130320013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121130319977 and 121130320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121130320001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5320551 + ... + 5343268.

It is an arithmetic number, because the mean of its divisors is an integer number (15601168660).

Almost surely, 2^121130320021 is an apocalyptic number.

It is an amenable number.

121130320021 is a deficient number, since it is larger than the sum of its proper divisors (3679029259).

121130320021 is a wasteful number, since it uses less digits than its factorization.

121130320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10664163.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121130320021 its reverse (120023031121), we get a palindrome (241153351142).

The spelling of 121130320021 in words is "one hundred twenty-one billion, one hundred thirty million, three hundred twenty thousand, twenty-one".