1323203013220 has 24 divisors (see below), whose sum is σ = 3031337812608. Its totient is φ = 481164732000.

The previous prime is 1323203013203. The next prime is 1323203013259. The reversal of 1323203013220 is 223103023231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1323203013191 and 1323203013200.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3007279356 + ... + 3007279795.

It is an arithmetic number, because the mean of its divisors is an integer number (126305742192).

Almost surely, 2^{1323203013220} is an apocalyptic number.

1323203013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323203013220 is an abundant number, since it is smaller than the sum of its proper divisors (1708134799388).

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

1323203013220 is a wasteful number, since it uses less digits than its factorization.

1323203013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6014559171 (or 6014559169 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1323203013220 its reverse (223103023231), we get a palindrome (1546306036451).

The spelling of 1323203013220 in words is "one trillion, three hundred twenty-three billion, two hundred three million, thirteen thousand, two hundred twenty".