2221222230 has 128 divisors (see below), whose sum is σ = 6325862400. Its totient is φ = 553392000.

The previous prime is 2221222229. The next prime is 2221222243. The reversal of 2221222230 is 322221222.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 63 ways as a sum of consecutive naturals, for example, 238155 + ... + 247305.

It is an arithmetic number, because the mean of its divisors is an integer number (49420800).

Almost surely, 2^2221222230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221222230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3162931200).

2221222230 is an abundant number, since it is smaller than the sum of its proper divisors (4104640170).

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

2221222230 is a wasteful number, since it uses less digits than its factorization.

2221222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227 (or 9221 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2221222230 is about 47129.8443663885. The cubic root of 2221222230 is about 1304.7601091616.

Adding to 2221222230 its reverse (322221222), we get a palindrome (2543443452).

The spelling of 2221222230 in words is "two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred thirty".