322220220 has 96 divisors (see below), whose sum is σ = 1033955328. Its totient is φ = 73446912.

The previous prime is 322220207. The next prime is 322220233. The reversal of 322220220 is 22022223.

It is an interprime number because it is at equal distance from previous prime (322220207) and next prime (322220233).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 322220220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193632 + ... + 195288.

It is an arithmetic number, because the mean of its divisors is an integer number (10770368).

Almost surely, 2^322220220 is an apocalyptic number.

322220220 is a gapful number since it is divisible by the number (30) 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 322220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516977664).

322220220 is an abundant number, since it is smaller than the sum of its proper divisors (711735108).

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

322220220 is a wasteful number, since it uses less digits than its factorization.

322220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 322220220 is about 17950.4935865285. The cubic root of 322220220 is about 685.5686187356.

Adding to 322220220 its reverse (22022223), we get a palindrome (344242443).

The spelling of 322220220 in words is "three hundred twenty-two million, two hundred twenty thousand, two hundred twenty".