12011121679 has 2 divisors, whose sum is σ = 12011121680. Its totient is φ = 12011121678.

The previous prime is 12011121659. The next prime is 12011121701. The reversal of 12011121679 is 97612111021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011121679 - 2¹³ = 12011113487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011121679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011121659) 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, 6005560839 + 6005560840.

It is an arithmetic number, because the mean of its divisors is an integer number (6005560840).

Almost surely, 2^12011121679 is an apocalyptic number.

12011121679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011121679 is an equidigital number, since it uses as much as digits as its factorization.

12011121679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 12011121679 in words is "twelve billion, eleven million, one hundred twenty-one thousand, six hundred seventy-nine".