1321031233002 has 144 divisors (see below), whose sum is σ = 3058199932320. Its totient is φ = 379786942080.

The previous prime is 1321031233001. The next prime is 1321031233007. The reversal of 1321031233002 is 2003321301231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321031233002.

It is not an unprimeable number, because it can be changed into a prime (1321031233001) 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 71 ways as a sum of consecutive naturals, for example, 28235793 + ... + 28282539.

It is an arithmetic number, because the mean of its divisors is an integer number (21237499530).

Almost surely, 2^{1321031233002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321031233002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529099966160).

1321031233002 is an abundant number, since it is smaller than the sum of its proper divisors (1737168699318).

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

1321031233002 is a wasteful number, since it uses less digits than its factorization.

1321031233002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46869 (or 46825 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1321031233002 its reverse (2003321301231), we get a palindrome (3324352534233).

The spelling of 1321031233002 in words is "one trillion, three hundred twenty-one billion, thirty-one million, two hundred thirty-three thousand, two".