2211222204 has 72 divisors (see below), whose sum is σ = 5896275840. Its totient is φ = 696784032.

The previous prime is 2211222203. The next prime is 2211222217. The reversal of 2211222204 is 4022221122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211222203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340839 + ... + 347265.

It is an arithmetic number, because the mean of its divisors is an integer number (81892720).

Almost surely, 2^2211222204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211222204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2948137920).

2211222204 is an abundant number, since it is smaller than the sum of its proper divisors (3685053636).

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

2211222204 is a wasteful number, since it uses less digits than its factorization.

2211222204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959 (or 6954 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2211222204 is about 47023.6345256298. The cubic root of 2211222204 is about 1302.7991370635.

Adding to 2211222204 its reverse (4022221122), we get a palindrome (6233443326).

The spelling of 2211222204 in words is "two billion, two hundred eleven million, two hundred twenty-two thousand, two hundred four".