12103206018 has 16 divisors (see below), whose sum is σ = 24329289600. Its totient is φ = 4013922416.

The previous prime is 12103206013. The next prime is 12103206019. The reversal of 12103206018 is 81060230121.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12103206013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5118618 + ... + 5120981.

It is an arithmetic number, because the mean of its divisors is an integer number (1520580600).

Almost surely, 2^12103206018 is an apocalyptic number.

12103206018 is an abundant number, since it is smaller than the sum of its proper divisors (12226083582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12103206018 is a wasteful number, since it uses less digits than its factorization.

12103206018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10239801.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 12103206018 its reverse (81060230121), we get a palindrome (93163436139).

The spelling of 12103206018 in words is "twelve billion, one hundred three million, two hundred six thousand, eighteen".