3223220220 has 144 divisors (see below), whose sum is σ = 10954446048. Its totient is φ = 760250880.

The previous prime is 3223220201. The next prime is 3223220269. The reversal of 3223220220 is 220223223.

3223220220 is a `hidden beast` number, since 3 + 223 + 220 + 220 = 666.

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 = 3223220193 and 3223220202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51262 + ... + 95258.

It is an arithmetic number, because the mean of its divisors is an integer number (76072542).

Almost surely, 2^3223220220 is an apocalyptic number.

3223220220 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 3223220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5477223024).

3223220220 is an abundant number, since it is smaller than the sum of its proper divisors (7731225828).

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

3223220220 is a wasteful number, since it uses less digits than its factorization.

3223220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44060 (or 44055 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 3223220220 is about 56773.4112063033. The cubic root of 3223220220 is about 1477.1683469740.

Adding to 3223220220 its reverse (220223223), we get a palindrome (3443443443).

The spelling of 3223220220 in words is "three billion, two hundred twenty-three million, two hundred twenty thousand, two hundred twenty".