12111202289 has 2 divisors, whose sum is σ = 12111202290. Its totient is φ = 12111202288.

The previous prime is 12111202277. The next prime is 12111202321. The reversal of 12111202289 is 98220211121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8373714064 + 3737488225 = 91508^2 + 61135^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111202289 - 2⁴ = 12111202273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12111202589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055601144 + 6055601145.

It is an arithmetic number, because the mean of its divisors is an integer number (6055601145).

Almost surely, 2^12111202289 is an apocalyptic number.

It is an amenable number.

12111202289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111202289 is an equidigital number, since it uses as much as digits as its factorization.

12111202289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 12111202289 in words is "twelve billion, one hundred eleven million, two hundred two thousand, two hundred eighty-nine".