1330321221240 has 256 divisors, whose sum is σ = 4548515212800. Its totient is φ = 308297472000.

The previous prime is 1330321221233. The next prime is 1330321221241. The reversal of 1330321221240 is 421221230331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1330321221240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330321221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3694239 + ... + 4038321.

It is an arithmetic number, because the mean of its divisors is an integer number (17767637550).

Almost surely, 2^{1330321221240} is an apocalyptic number.

1330321221240 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 1330321221240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274257606400).

1330321221240 is an abundant number, since it is smaller than the sum of its proper divisors (3218193991560).

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

1330321221240 is a wasteful number, since it uses less digits than its factorization.

1330321221240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344238 (or 344234 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1330321221240 its reverse (421221230331), we get a palindrome (1751542451571).

Subtracting from 1330321221240 its reverse (421221230331), we obtain a palindrome (909099990909).

The spelling of 1330321221240 in words is "one trillion, three hundred thirty billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred forty".