12031033121 has 2 divisors, whose sum is σ = 12031033122. Its totient is φ = 12031033120.

The previous prime is 12031033117. The next prime is 12031033139. The reversal of 12031033121 is 12133013021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11344593121 + 686440000 = 106511^2 + 26200^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031033121 - 2² = 12031033117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12031033121.

It is not a weakly prime, because it can be changed into another prime (12031033151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015516560 + 6015516561.

It is an arithmetic number, because the mean of its divisors is an integer number (6015516561).

Almost surely, 2^12031033121 is an apocalyptic number.

It is an amenable number.

12031033121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031033121 is an equidigital number, since it uses as much as digits as its factorization.

12031033121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12031033121 its reverse (12133013021), we get a palindrome (24164046142).

The spelling of 12031033121 in words is "twelve billion, thirty-one million, thirty-three thousand, one hundred twenty-one".