1320211001200 has 240 divisors, whose sum is σ = 3905715573760. Its totient is φ = 417615989760.

The previous prime is 1320211001183. The next prime is 1320211001201. The reversal of 1320211001200 is 21001120231.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320211001201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83238871 + ... + 83254729.

Almost surely, 2^{1320211001200} is an apocalyptic number.

1320211001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320211001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1952857786880).

1320211001200 is an abundant number, since it is smaller than the sum of its proper divisors (2585504572560).

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

1320211001200 is a wasteful number, since it uses less digits than its factorization.

1320211001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18184 (or 18173 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1320211001200 its reverse (21001120231), we get a palindrome (1341212121431).

The spelling of 1320211001200 in words is "one trillion, three hundred twenty billion, two hundred eleven million, one thousand, two hundred".