1323101340020 has 24 divisors (see below), whose sum is σ = 2779204327200. Its totient is φ = 529108819232.

The previous prime is 1323101339993. The next prime is 1323101340023. The reversal of 1323101340020 is 200431013231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1323101339974 and 1323101340001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323101340023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8149910 + ... + 8310669.

It is an arithmetic number, because the mean of its divisors is an integer number (115800180300).

Almost surely, 2^{1323101340020} is an apocalyptic number.

1323101340020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323101340020 is an abundant number, since it is smaller than the sum of its proper divisors (1456102987180).

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

1323101340020 is a wasteful number, since it uses less digits than its factorization.

1323101340020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16464607 (or 16464605 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1323101340020 its reverse (200431013231), we get a palindrome (1523532353251).

The spelling of 1323101340020 in words is "one trillion, three hundred twenty-three billion, one hundred one million, three hundred forty thousand, twenty".