12012331061 has 2 divisors, whose sum is σ = 12012331062. Its totient is φ = 12012331060.

The previous prime is 12012331043. The next prime is 12012331073. The reversal of 12012331061 is 16013321021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9794862961 + 2217468100 = 98969^2 + 47090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012331061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012301061) 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, 6006165530 + 6006165531.

It is an arithmetic number, because the mean of its divisors is an integer number (6006165531).

Almost surely, 2^12012331061 is an apocalyptic number.

It is an amenable number.

12012331061 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012331061 is an equidigital number, since it uses as much as digits as its factorization.

12012331061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12012331061 its reverse (16013321021), we get a palindrome (28025652082).

The spelling of 12012331061 in words is "twelve billion, twelve million, three hundred thirty-one thousand, sixty-one".