1323022021000 has 64 divisors (see below), whose sum is σ = 3202625790000. Its totient is φ = 510960217600.

The previous prime is 1323022020989. The next prime is 1323022021001. The reversal of 1323022021000 is 1202203231.

It can be written as a sum of positive squares in 8 ways, for example, as 8509324516 + 1314512696484 = 92246^2 + 1146522^2 .

It is not an unprimeable number, because it can be changed into a prime (1323022021001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22781725 + ... + 22839724.

Almost surely, 2^{1323022021000} is an apocalyptic number.

1323022021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323022021000 is an abundant number, since it is smaller than the sum of its proper divisors (1879603769000).

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

1323022021000 is a wasteful number, since it uses less digits than its factorization.

1323022021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45621499 (or 45621485 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1323022021000 its reverse (1202203231), we get a palindrome (1324224224231).

The spelling of 1323022021000 in words is "one trillion, three hundred twenty-three billion, twenty-two million, twenty-one thousand".