12111256089 has 24 divisors (see below), whose sum is σ = 18439491200. Its totient is φ = 7638948000.

The previous prime is 12111256061. The next prime is 12111256097. The reversal of 12111256089 is 98065211121.

12111256089 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 12 + 560 + 89 = 666.

It is not a de Polignac number, because 12111256089 - 2²⁴ = 12094478873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12111256019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81267 + ... + 175575.

Almost surely, 2^12111256089 is an apocalyptic number.

12111256089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12111256089 is a deficient number, since it is larger than the sum of its proper divisors (6328235111).

12111256089 is a wasteful number, since it uses less digits than its factorization.

12111256089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95085 (or 95082 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 12111256089 in words is "twelve billion, one hundred eleven million, two hundred fifty-six thousand, eighty-nine".