1320212101200 has 120 divisors (see below), whose sum is σ = 4231066628928. Its totient is φ = 351891133440.

The previous prime is 1320212101193. The next prime is 1320212101259. The reversal of 1320212101200 is 21012120231.

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 1320212101200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2306989 + ... + 2821811.

Almost surely, 2^{1320212101200} is an apocalyptic number.

1320212101200 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 1320212101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2115533314464).

1320212101200 is an abundant number, since it is smaller than the sum of its proper divisors (2910854527728).

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

1320212101200 is a wasteful number, since it uses less digits than its factorization.

1320212101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516981 (or 516970 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1320212101200 its reverse (21012120231), we get a palindrome (1341224221431).

The spelling of 1320212101200 in words is "one trillion, three hundred twenty billion, two hundred twelve million, one hundred one thousand, two hundred".