1220330220 has 24 divisors (see below), whose sum is σ = 3416924784. Its totient is φ = 325421376.

The previous prime is 1220330213. The next prime is 1220330311. The reversal of 1220330220 is 220330221.

1220330220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 1220330220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10169359 + ... + 10169478.

It is an arithmetic number, because the mean of its divisors is an integer number (142371866).

Almost surely, 2^1220330220 is an apocalyptic number.

1220330220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220330220 is an abundant number, since it is smaller than the sum of its proper divisors (2196594564).

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

1220330220 is a wasteful number, since it uses less digits than its factorization.

1220330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20338849 (or 20338847 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1220330220 is about 34933.2251588656. The cubic root of 1220330220 is about 1068.6261285250.

Adding to 1220330220 its reverse (220330221), we get a palindrome (1440660441).

Subtracting from 1220330220 its reverse (220330221), we obtain a palindrome (999999999).

The spelling of 1220330220 in words is "one billion, two hundred twenty million, three hundred thirty thousand, two hundred twenty".