1023320121330 has 128 divisors (see below), whose sum is σ = 2662109597952. Its totient is φ = 250256268288.

The previous prime is 1023320121277. The next prime is 1023320121353. The reversal of 1023320121330 is 331210233201.

It is a junction number, because it is equal to n+sod(n) for n = 1023320121297 and 1023320121306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108824409 + ... + 108833811.

It is an arithmetic number, because the mean of its divisors is an integer number (20797731234).

Almost surely, 2^{1023320121330} is an apocalyptic number.

1023320121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023320121330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331054798976).

1023320121330 is an abundant number, since it is smaller than the sum of its proper divisors (1638789476622).

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

1023320121330 is a wasteful number, since it uses less digits than its factorization.

1023320121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11212.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1023320121330 its reverse (331210233201), we get a palindrome (1354530354531).

The spelling of 1023320121330 in words is "one trillion, twenty-three billion, three hundred twenty million, one hundred twenty-one thousand, three hundred thirty".