1320223032220 has 24 divisors (see below), whose sum is σ = 2772491652000. Its totient is φ = 528084777792.

The previous prime is 1320223032181. The next prime is 1320223032229. The reversal of 1320223032220 is 222303220231.

It is a junction number, because it is equal to n+sod(n) for n = 1320223032191 and 1320223032200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320223032229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3272361 + ... + 3653599.

It is an arithmetic number, because the mean of its divisors is an integer number (115520485500).

Almost surely, 2^{1320223032220} is an apocalyptic number.

1320223032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320223032220 is an abundant number, since it is smaller than the sum of its proper divisors (1452268619780).

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

1320223032220 is a wasteful number, since it uses less digits than its factorization.

1320223032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554397 (or 554395 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 1320223032220 its reverse (222303220231), we get a palindrome (1542526252451).

The spelling of 1320223032220 in words is "one trillion, three hundred twenty billion, two hundred twenty-three million, thirty-two thousand, two hundred twenty".