1220332120 has 32 divisors (see below), whose sum is σ = 3137997600. Its totient is φ = 418399488.

The previous prime is 1220332117. The next prime is 1220332207. The reversal of 1220332120 is 212330221.

It is a junction number, because it is equal to n+sod(n) for n = 1220332094 and 1220332103.

It is a congruent number.

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, 2178885 + ... + 2179444.

It is an arithmetic number, because the mean of its divisors is an integer number (98062425).

Almost surely, 2^1220332120 is an apocalyptic number.

1220332120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220332120 is an abundant number, since it is smaller than the sum of its proper divisors (1917665480).

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

1220332120 is a wasteful number, since it uses less digits than its factorization.

1220332120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358347 (or 4358343 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1220332120 is about 34933.2523535957. The cubic root of 1220332120 is about 1068.6266831259.

Adding to 1220332120 its reverse (212330221), we get a palindrome (1432662341).

The spelling of 1220332120 in words is "one billion, two hundred twenty million, three hundred thirty-two thousand, one hundred twenty".