2218420050 has 288 divisors, whose sum is σ = 7282867200. Its totient is φ = 436233600.

The previous prime is 2218420019. The next prime is 2218420067. The reversal of 2218420050 is 500248122.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2218420050.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2413491 + ... + 2414409.

Almost surely, 2^2218420050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218420050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3641433600).

2218420050 is an abundant number, since it is smaller than the sum of its proper divisors (5064447150).

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

2218420050 is a wasteful number, since it uses less digits than its factorization.

2218420050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 2218420050 is about 47100.1066877773. The cubic root of 2218420050 is about 1304.2112054707.

Adding to 2218420050 its reverse (500248122), we get a palindrome (2718668172).

The spelling of 2218420050 in words is "two billion, two hundred eighteen million, four hundred twenty thousand, fifty".