1321331204130 has 192 divisors, whose sum is σ = 3874602221568. Its totient is φ = 282196373760.

The previous prime is 1321331204107. The next prime is 1321331204183. The reversal of 1321331204130 is 314021331231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321331204130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5354239 + ... + 5595581.

It is an arithmetic number, because the mean of its divisors is an integer number (20180219904).

Almost surely, 2^{1321331204130} is an apocalyptic number.

1321331204130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321331204130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1937301110784).

1321331204130 is an abundant number, since it is smaller than the sum of its proper divisors (2553271017438).

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

1321331204130 is a wasteful number, since it uses less digits than its factorization.

1321331204130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241449 (or 241420 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1321331204130 its reverse (314021331231), we get a palindrome (1635352535361).

The spelling of 1321331204130 in words is "one trillion, three hundred twenty-one billion, three hundred thirty-one million, two hundred four thousand, one hundred thirty".