12245678889 has 4 divisors (see below), whose sum is σ = 16327571856. Its totient is φ = 8163785924.

The previous prime is 12245678843. The next prime is 12245678899. The reversal of 12245678889 is 98887654221.

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 12245678889 - 2⁸ = 12245678633 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12245678839) 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 in 3 ways as a sum of consecutive naturals, for example, 2040946479 + ... + 2040946484.

It is an arithmetic number, because the mean of its divisors is an integer number (4081892964).

Almost surely, 2^12245678889 is an apocalyptic number.

It is an amenable number.

12245678889 is a deficient number, since it is larger than the sum of its proper divisors (4081892967).

12245678889 is an equidigital number, since it uses as much as digits as its factorization.

12245678889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081892966.

The product of its digits is 15482880, while the sum is 60.

The spelling of 12245678889 in words is "twelve billion, two hundred forty-five million, six hundred seventy-eight thousand, eight hundred eighty-nine".