1323201001200 has 120 divisors (see below), whose sum is σ = 4564704225648. Its totient is φ = 325711011840.

The previous prime is 1323201001169. The next prime is 1323201001211. The reversal of 1323201001200 is 21001023231.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1323201001200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42394689 + ... + 42425888.

Almost surely, 2^{1323201001200} is an apocalyptic number.

1323201001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323201001200 is an abundant number, since it is smaller than the sum of its proper divisors (3241503224448).

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

1323201001200 is a wasteful number, since it uses less digits than its factorization.

1323201001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84820611 (or 84820600 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1323201001200 its reverse (21001023231), we get a palindrome (1344202024431).

The spelling of 1323201001200 in words is "one trillion, three hundred twenty-three billion, two hundred one million, one thousand, two hundred".