1331322323212 has 96 divisors (see below), whose sum is σ = 2887607923200. Its totient is φ = 524134499328.

The previous prime is 1331322323209. The next prime is 1331322323231. The reversal of 1331322323212 is 2123232231331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3284739 + ... + 3667717.

It is an arithmetic number, because the mean of its divisors is an integer number (30079249200).

Almost surely, 2^{1331322323212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331322323212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443803961600).

1331322323212 is an abundant number, since it is smaller than the sum of its proper divisors (1556285599988).

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

1331322323212 is a wasteful number, since it uses less digits than its factorization.

1331322323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383183 (or 383181 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

Adding to 1331322323212 its reverse (2123232231331), we get a palindrome (3454554554543).

The spelling of 1331322323212 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-two million, three hundred twenty-three thousand, two hundred twelve".