12002120118 has 12 divisors (see below), whose sum is σ = 26004593628. Its totient is φ = 4000706700.

The previous prime is 12002120111. The next prime is 12002120167. The reversal of 12002120118 is 81102120021.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 666784451 = 12002120118 / (1 + 2 + 0 + 0 + 2 + 1 + 2 + 0 + 1 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 12002120118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002120111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 333392208 + ... + 333392243.

It is an arithmetic number, because the mean of its divisors is an integer number (2167049469).

Almost surely, 2^12002120118 is an apocalyptic number.

12002120118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12002120118 is an abundant number, since it is smaller than the sum of its proper divisors (14002473510).

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

12002120118 is a wasteful number, since it uses less digits than its factorization.

12002120118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666784459 (or 666784456 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12002120118 its reverse (81102120021), we get a palindrome (93104240139).

The spelling of 12002120118 in words is "twelve billion, two million, one hundred twenty thousand, one hundred eighteen".