200012021109918 has 192 divisors, whose sum is σ = 459661941752832. Its totient is φ = 62724196846080.

The previous prime is 200012021109877. The next prime is 200012021109919. The reversal of 200012021109918 is 819901120210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012021109919) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46546895946 + ... + 46546900242.

It is an arithmetic number, because the mean of its divisors is an integer number (2394072613296).

Almost surely, 2^{200012021109918} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200012021109918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229830970876416).

200012021109918 is an abundant number, since it is smaller than the sum of its proper divisors (259649920642914).

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

200012021109918 is a wasteful number, since it uses less digits than its factorization.

200012021109918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7799 (or 7796 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 200012021109918 in words is "two hundred trillion, twelve billion, twenty-one million, one hundred nine thousand, nine hundred eighteen".