1331340422412 has 384 divisors, whose sum is σ = 4541851238400. Its totient is φ = 291973248000.

The previous prime is 1331340422411. The next prime is 1331340422417. The reversal of 1331340422412 is 2142240431331.

It is a self number, because there is not a number n which added to its sum of digits gives 1331340422412.

It is not an unprimeable number, because it can be changed into a prime (1331340422411) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6518037 + ... + 6719187.

It is an arithmetic number, because the mean of its divisors is an integer number (11827737600).

Almost surely, 2^{1331340422412} is an apocalyptic number.

1331340422412 is a gapful number since it is divisible by the number (12) 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 1331340422412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2270925619200).

1331340422412 is an abundant number, since it is smaller than the sum of its proper divisors (3210510815988).

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

1331340422412 is a wasteful number, since it uses less digits than its factorization.

1331340422412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201237 (or 201235 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1331340422412 its reverse (2142240431331), we get a palindrome (3473580853743).

The spelling of 1331340422412 in words is "one trillion, three hundred thirty-one billion, three hundred forty million, four hundred twenty-two thousand, four hundred twelve".