2312220222 has 128 divisors (see below), whose sum is σ = 5858334720. Its totient is φ = 670602240.

The previous prime is 2312220217. The next prime is 2312220223. The reversal of 2312220222 is 2220222132.

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

It is a junction number, because it is equal to n+sod(n) for n = 2312220195 and 2312220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1145358 + ... + 1147374.

It is an arithmetic number, because the mean of its divisors is an integer number (45768240).

Almost surely, 2^2312220222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2312220222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2929167360).

2312220222 is an abundant number, since it is smaller than the sum of its proper divisors (3546114498).

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

2312220222 is a wasteful number, since it uses less digits than its factorization.

2312220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135 (or 2129 counting only the distinct ones).

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

The square root of 2312220222 is about 48085.5510730614. The cubic root of 2312220222 is about 1322.3397860765.

Adding to 2312220222 its reverse (2220222132), we get a palindrome (4532442354).

The spelling of 2312220222 in words is "two billion, three hundred twelve million, two hundred twenty thousand, two hundred twenty-two".