1320323203122 has 128 divisors (see below), whose sum is σ = 3313622366208. Its totient is φ = 340720473600.

The previous prime is 1320323203109. The next prime is 1320323203127. The reversal of 1320323203122 is 2213023230231.

It is a junction number, because it is equal to n+sod(n) for n = 1320323203092 and 1320323203101.

It is not an unprimeable number, because it can be changed into a prime (1320323203127) 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 63 ways as a sum of consecutive naturals, for example, 44379172 + ... + 44408912.

It is an arithmetic number, because the mean of its divisors is an integer number (25887674736).

Almost surely, 2^{1320323203122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320323203122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656811183104).

1320323203122 is an abundant number, since it is smaller than the sum of its proper divisors (1993299163086).

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

1320323203122 is a wasteful number, since it uses less digits than its factorization.

1320323203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30384.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 1320323203122 its reverse (2213023230231), we get a palindrome (3533346433353).

The spelling of 1320323203122 in words is "one trillion, three hundred twenty billion, three hundred twenty-three million, two hundred three thousand, one hundred twenty-two".