200122185818 has 32 divisors (see below), whose sum is σ = 316847954880. Its totient is φ = 94535424000.

The previous prime is 200122185817. The next prime is 200122185853. The reversal of 200122185818 is 818581221002.

200122185818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×200122185818³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (200122185817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22916513 + ... + 22925243.

It is an arithmetic number, because the mean of its divisors is an integer number (9901498590).

Almost surely, 2^200122185818 is an apocalyptic number.

200122185818 is a deficient number, since it is larger than the sum of its proper divisors (116725769062).

200122185818 is a wasteful number, since it uses less digits than its factorization.

200122185818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10334.

The product of its (nonzero) digits is 20480, while the sum is 38.

The spelling of 200122185818 in words is "two hundred billion, one hundred twenty-two million, one hundred eighty-five thousand, eight hundred eighteen".