1321113002000 has 160 divisors (see below), whose sum is σ = 3503112357888. Its totient is φ = 477888000000.

The previous prime is 1321113001937. The next prime is 1321113002059. The reversal of 1321113002000 is 2003111231.

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, 4044800 + ... + 4359200.

Almost surely, 2^{1321113002000} is an apocalyptic number.

1321113002000 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 1321113002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751556178944).

1321113002000 is an abundant number, since it is smaller than the sum of its proper divisors (2181999355888).

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

1321113002000 is a wasteful number, since it uses less digits than its factorization.

1321113002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314626 (or 314610 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1321113002000 its reverse (2003111231), we get a palindrome (1323116113231).

The spelling of 1321113002000 in words is "one trillion, three hundred twenty-one billion, one hundred thirteen million, two thousand".