12011100221689 has 2 divisors, whose sum is σ = 12011100221690. Its totient is φ = 12011100221688.

The previous prime is 12011100221683. The next prime is 12011100221693. The reversal of 12011100221689 is 98612200111021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8625334619664 + 3385765602025 = 2936892^2 + 1840045^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011100221689 - 2²⁹ = 12010563350777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011100221683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005550110844 + 6005550110845.

It is an arithmetic number, because the mean of its divisors is an integer number (6005550110845).

Almost surely, 2^{12011100221689} is an apocalyptic number.

It is an amenable number.

12011100221689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011100221689 is an equidigital number, since it uses as much as digits as its factorization.

12011100221689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 34.

The spelling of 12011100221689 in words is "twelve trillion, eleven billion, one hundred million, two hundred twenty-one thousand, six hundred eighty-nine".