12120313123121 has 8 divisors (see below), whose sum is σ = 13857678315264. Its totient is φ = 10384420903200.

The previous prime is 12120313123091. The next prime is 12120313123123. The reversal of 12120313123121 is 12132131302121.

It is a happy number.

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 12120313123121 - 2¹⁰ = 12120313122097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12120313123123) 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, 368225420 + ... + 368258333.

It is an arithmetic number, because the mean of its divisors is an integer number (1732209789408).

Almost surely, 2^{12120313123121} is an apocalyptic number.

It is an amenable number.

12120313123121 is a deficient number, since it is larger than the sum of its proper divisors (1737365192143).

12120313123121 is an equidigital number, since it uses as much as digits as its factorization.

12120313123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736486111.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12120313123121 its reverse (12132131302121), we get a palindrome (24252444425242).

The spelling of 12120313123121 in words is "twelve trillion, one hundred twenty billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred twenty-one".