1320203221232 has 80 divisors (see below), whose sum is σ = 3032092838400. Its totient is φ = 544849079040.

The previous prime is 1320203221213. The next prime is 1320203221237. The reversal of 1320203221232 is 2321223020231.

It is a junction number, because it is equal to n+sod(n) for n = 1320203221198 and 1320203221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320203221237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694757 + ... + 1767227.

It is an arithmetic number, because the mean of its divisors is an integer number (37901160480).

Almost surely, 2^{1320203221232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320203221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516046419200).

1320203221232 is an abundant number, since it is smaller than the sum of its proper divisors (1711889617168).

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

1320203221232 is a wasteful number, since it uses less digits than its factorization.

1320203221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072894 (or 1072888 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1320203221232 its reverse (2321223020231), we get a palindrome (3641426241463).

The spelling of 1320203221232 in words is "one trillion, three hundred twenty billion, two hundred three million, two hundred twenty-one thousand, two hundred thirty-two".