2221239384 has 288 divisors, whose sum is σ = 7936110000. Its totient is φ = 554770944.

The previous prime is 2221239367. The next prime is 2221239437. The reversal of 2221239384 is 4839321222.

2221239384 is a `hidden beast` number, since 22 + 21 + 239 + 384 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 870142 + ... + 872690.

Almost surely, 2^2221239384 is an apocalyptic number.

2221239384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221239384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3968055000).

2221239384 is an abundant number, since it is smaller than the sum of its proper divisors (5714870616).

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

2221239384 is a wasteful number, since it uses less digits than its factorization.

2221239384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2593 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2221239384 is about 47130.0263526343. The cubic root of 2221239384 is about 1304.7634679427.

The spelling of 2221239384 in words is "two billion, two hundred twenty-one million, two hundred thirty-nine thousand, three hundred eighty-four".