12111022010609 has 2 divisors, whose sum is σ = 12111022010610. Its totient is φ = 12111022010608.

The previous prime is 12111022010597. The next prime is 12111022010623. The reversal of 12111022010609 is 90601022011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7885004400625 + 4226017609984 = 2808025^2 + 2055728^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111022010609 - 2²⁸ = 12110753575153 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111022010209) 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, 6055511005304 + 6055511005305.

It is an arithmetic number, because the mean of its divisors is an integer number (6055511005305).

Almost surely, 2^{12111022010609} is an apocalyptic number.

It is an amenable number.

12111022010609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111022010609 is an equidigital number, since it uses as much as digits as its factorization.

12111022010609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 12111022010609 in words is "twelve trillion, one hundred eleven billion, twenty-two million, ten thousand, six hundred nine".