1320220311232 has 28 divisors (see below), whose sum is σ = 2675552870880. Its totient is φ = 646065257216.

The previous prime is 1320220311227. The next prime is 1320220311259. The reversal of 1320220311232 is 2321130220231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219448507 + ... + 219454522.

Almost surely, 2^{1320220311232} is an apocalyptic number.

It is an amenable number.

1320220311232 is an abundant number, since it is smaller than the sum of its proper divisors (1355332559648).

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

1320220311232 is an equidigital number, since it uses as much as digits as its factorization.

1320220311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438903088 (or 438903078 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1320220311232 its reverse (2321130220231), we get a palindrome (3641350531463).

The spelling of 1320220311232 in words is "one trillion, three hundred twenty billion, two hundred twenty million, three hundred eleven thousand, two hundred thirty-two".