1323021230020 has 48 divisors (see below), whose sum is σ = 3178114490880. Its totient is φ = 453198201984.

The previous prime is 1323021229997. The next prime is 1323021230081. The reversal of 1323021230020 is 200321203231.

It is a self number, because there is not a number n which added to its sum of digits gives 1323021230020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105404 + ... + 4415923.

It is an arithmetic number, because the mean of its divisors is an integer number (66210718560).

Almost surely, 2^{1323021230020} is an apocalyptic number.

1323021230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323021230020 is an abundant number, since it is smaller than the sum of its proper divisors (1855093260860).

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

1323021230020 is a wasteful number, since it uses less digits than its factorization.

1323021230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8522452 (or 8522450 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 1323021230020 its reverse (200321203231), we get a palindrome (1523342433251).

The spelling of 1323021230020 in words is "one trillion, three hundred twenty-three billion, twenty-one million, two hundred thirty thousand, twenty".