12011335989 has 4 divisors (see below), whose sum is σ = 16015114656. Its totient is φ = 8007557324.

The previous prime is 12011335969. The next prime is 12011335997. The reversal of 12011335989 is 98953311021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12011335989 - 2⁹ = 12011335477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011335989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011335969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001889329 + ... + 2001889334.

It is an arithmetic number, because the mean of its divisors is an integer number (4003778664).

Almost surely, 2^12011335989 is an apocalyptic number.

It is an amenable number.

12011335989 is a deficient number, since it is larger than the sum of its proper divisors (4003778667).

12011335989 is an equidigital number, since it uses as much as digits as its factorization.

12011335989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003778666.

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 12011335989 in words is "twelve billion, eleven million, three hundred thirty-five thousand, nine hundred eighty-nine".