1323321001200 has 270 divisors, whose sum is σ = 5047726989032. Its totient is φ = 320804985600.

The previous prime is 1323321001199. The next prime is 1323321001207. The reversal of 1323321001200 is 21001233231.

1323321001200 is a `hidden beast` number, since 1 + 32 + 332 + 100 + 1 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323321001207) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1083364 + ... + 1954563.

Almost surely, 2^{1323321001200} is an apocalyptic number.

1323321001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323321001200 is an abundant number, since it is smaller than the sum of its proper divisors (3724405987832).

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

1323321001200 is a wasteful number, since it uses less digits than its factorization.

1323321001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037973 (or 3037948 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1323321001200 its reverse (21001233231), we get a palindrome (1344322234431).

The spelling of 1323321001200 in words is "one trillion, three hundred twenty-three billion, three hundred twenty-one million, one thousand, two hundred".