12120021331331 has 2 divisors, whose sum is σ = 12120021331332. Its totient is φ = 12120021331330.

The previous prime is 12120021331289. The next prime is 12120021331357. The reversal of 12120021331331 is 13313312002121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12120021331331 - 2¹⁸ = 12120021069187 is a prime.

It is a super-2 number, since 2×12120021331331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12120021331297 and 12120021331306.

It is not a weakly prime, because it can be changed into another prime (12120021331031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060010665665 + 6060010665666.

It is an arithmetic number, because the mean of its divisors is an integer number (6060010665666).

Almost surely, 2^{12120021331331} is an apocalyptic number.

12120021331331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120021331331 is an equidigital number, since it uses as much as digits as its factorization.

12120021331331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12120021331331 its reverse (13313312002121), we get a palindrome (25433333333452).

The spelling of 12120021331331 in words is "twelve trillion, one hundred twenty billion, twenty-one million, three hundred thirty-one thousand, three hundred thirty-one".