1320220220 has 48 divisors (see below), whose sum is σ = 3026975616. Its totient is φ = 479688000.

The previous prime is 1320220207. The next prime is 1320220229. The reversal of 1320220220 is 220220231.

1320220220 is a modest number, since divided by 220220 gives 1320 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1320220195 and 1320220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320220229) 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 15 ways as a sum of consecutive naturals, for example, 520355 + ... + 522885.

It is an arithmetic number, because the mean of its divisors is an integer number (63061992).

Almost surely, 2^1320220220 is an apocalyptic number.

1320220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320220220 is an abundant number, since it is smaller than the sum of its proper divisors (1706755396).

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

1320220220 is a wasteful number, since it uses less digits than its factorization.

1320220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4922 (or 4920 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1320220220 is about 36334.8348007804. The cubic root of 1320220220 is about 1097.0223103317.

Adding to 1320220220 its reverse (220220231), we get a palindrome (1540440451).

The spelling of 1320220220 in words is "one billion, three hundred twenty million, two hundred twenty thousand, two hundred twenty".