18133122112 has 112 divisors (see below), whose sum is σ = 43352151040. Its totient is φ = 7351368192.

The previous prime is 18133122107. The next prime is 18133122121. The reversal of 18133122112 is 21122133181.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8230003 + ... + 8232205.

Almost surely, 2^18133122112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18133122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21676075520).

18133122112 is an abundant number, since it is smaller than the sum of its proper divisors (25219028928).

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

18133122112 is a wasteful number, since it uses less digits than its factorization.

18133122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208 (or 3198 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

Adding to 18133122112 its reverse (21122133181), we get a palindrome (39255255293).

The spelling of 18133122112 in words is "eighteen billion, one hundred thirty-three million, one hundred twenty-two thousand, one hundred twelve".