1321032032000 has 144 divisors (see below), whose sum is σ = 3339978593952. Its totient is φ = 520525209600.

The previous prime is 1321032031961. The next prime is 1321032032011. The reversal of 1321032032000 is 2302301231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321032032000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1835924 + ... + 2452076.

Almost surely, 2^{1321032032000} is an apocalyptic number.

1321032032000 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 1321032032000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669989296976).

1321032032000 is an abundant number, since it is smaller than the sum of its proper divisors (2018946561952).

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

1321032032000 is an frugal number, since it uses more digits than its factorization.

1321032032000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616251 (or 616227 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1321032032000 its reverse (2302301231), we get a palindrome (1323334333231).

The spelling of 1321032032000 in words is "one trillion, three hundred twenty-one billion, thirty-two million, thirty-two thousand".