18301021111204 has 12 divisors (see below), whose sum is σ = 34490385940444. Its totient is φ = 8446625128224.

The previous prime is 18301021111171. The next prime is 18301021111223. The reversal of 18301021111204 is 40211112010381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10777235436900 + 7523785674304 = 3282870^2 + 2742952^2 .

It is an unprimeable number.

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, 175971356787 + ... + 175971356890.

Almost surely, 2^{18301021111204} is an apocalyptic number.

It is an amenable number.

18301021111204 is a deficient number, since it is larger than the sum of its proper divisors (16189364829240).

18301021111204 is a wasteful number, since it uses less digits than its factorization.

18301021111204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351942713694 (or 351942713692 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 18301021111204 its reverse (40211112010381), we get a palindrome (58512133121585).

The spelling of 18301021111204 in words is "eighteen trillion, three hundred one billion, twenty-one million, one hundred eleven thousand, two hundred four".