12120131302121 has 16 divisors (see below), whose sum is σ = 12774691180800. Its totient is φ = 11476247323200.

The previous prime is 12120131302117. The next prime is 12120131302127. The reversal of 12120131302121 is 12120313102121.

It is a cyclic number.

It is not a de Polignac number, because 12120131302121 - 2² = 12120131302117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120131302093 and 12120131302102.

It is not an unprimeable number, because it can be changed into a prime (12120131302127) 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 15 ways as a sum of consecutive naturals, for example, 12058691 + ... + 13025063.

It is an arithmetic number, because the mean of its divisors is an integer number (798418198800).

Almost surely, 2^{12120131302121} is an apocalyptic number.

It is an amenable number.

12120131302121 is a deficient number, since it is larger than the sum of its proper divisors (654559878679).

12120131302121 is a wasteful number, since it uses less digits than its factorization.

12120131302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971896.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12120131302121 its reverse (12120313102121), we get a palindrome (24240444404242).

The spelling of 12120131302121 in words is "twelve trillion, one hundred twenty billion, one hundred thirty-one million, three hundred two thousand, one hundred twenty-one".