12120331331 has 2 divisors, whose sum is σ = 12120331332. Its totient is φ = 12120331330.

The previous prime is 12120331273. The next prime is 12120331337. The reversal of 12120331331 is 13313302121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120331331 is a prime.

It is a super-2 number, since 2×12120331331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12120331337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060165665 + 6060165666.

It is an arithmetic number, because the mean of its divisors is an integer number (6060165666).

Almost surely, 2^12120331331 is an apocalyptic number.

12120331331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120331331 is an equidigital number, since it uses as much as digits as its factorization.

12120331331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12120331331 its reverse (13313302121), we get a palindrome (25433633452).

The spelling of 12120331331 in words is "twelve billion, one hundred twenty million, three hundred thirty-one thousand, three hundred thirty-one".