218402203822 has 16 divisors (see below), whose sum is σ = 357409210752. Its totient is φ = 99267121720.

The previous prime is 218402203807. The next prime is 218402203829. The reversal of 218402203822 is 228302204812.

218402203822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218402203829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15753 + ... + 661099.

It is an arithmetic number, because the mean of its divisors is an integer number (22338075672).

Almost surely, 2^218402203822 is an apocalyptic number.

218402203822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

218402203822 is a deficient number, since it is larger than the sum of its proper divisors (139007006930).

218402203822 is a wasteful number, since it uses less digits than its factorization.

218402203822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660743.

The product of its (nonzero) digits is 24576, while the sum is 34.

It can be divided in two parts, 218402 and 203822, that added together give a palindrome (422224).

The spelling of 218402203822 in words is "two hundred eighteen billion, four hundred two million, two hundred three thousand, eight hundred twenty-two".