1320212134240 has 96 divisors (see below), whose sum is σ = 3174685000704. Its totient is φ = 518702384640.

The previous prime is 1320212134223. The next prime is 1320212134279. The reversal of 1320212134240 is 424312120231.

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 15 ways as a sum of consecutive naturals, for example, 3542385 + ... + 3897295.

It is an arithmetic number, because the mean of its divisors is an integer number (33069635424).

Almost surely, 2^{1320212134240} is an apocalyptic number.

1320212134240 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 1320212134240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587342500352).

1320212134240 is an abundant number, since it is smaller than the sum of its proper divisors (1854472866464).

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

1320212134240 is a wasteful number, since it uses less digits than its factorization.

1320212134240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355340 (or 355332 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1320212134240 its reverse (424312120231), we get a palindrome (1744524254471).

The spelling of 1320212134240 in words is "one trillion, three hundred twenty billion, two hundred twelve million, one hundred thirty-four thousand, two hundred forty".