12120113221331 has 2 divisors, whose sum is σ = 12120113221332. Its totient is φ = 12120113221330.

The previous prime is 12120113221327. The next prime is 12120113221369. The reversal of 12120113221331 is 13312231102121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12120113221331 - 2² = 12120113221327 is a prime.

It is a super-2 number, since 2×12120113221331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12120113221297 and 12120113221306.

It is not a weakly prime, because it can be changed into another prime (12120113221631) 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 as a sum of consecutive naturals, namely, 6060056610665 + 6060056610666.

It is an arithmetic number, because the mean of its divisors is an integer number (6060056610666).

Almost surely, 2^{12120113221331} is an apocalyptic number.

12120113221331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120113221331 is an equidigital number, since it uses as much as digits as its factorization.

12120113221331 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12120113221331 its reverse (13312231102121), we get a palindrome (25432344323452).

The spelling of 12120113221331 in words is "twelve trillion, one hundred twenty billion, one hundred thirteen million, two hundred twenty-one thousand, three hundred thirty-one".