13021321232000 has 128 divisors (see below), whose sum is σ = 33127151428800. Its totient is φ = 5087399654400.

The previous prime is 13021321231991. The next prime is 13021321232009. The reversal of 13021321232000 is 23212312031.

It is an interprime number because it is at equal distance from previous prime (13021321231991) and next prime (13021321232009).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13021321232009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8775170 + ... + 10151169.

Almost surely, 2^{13021321232000} is an apocalyptic number.

13021321232000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021321232000 is an abundant number, since it is smaller than the sum of its proper divisors (20105830196800).

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

13021321232000 is an equidigital number, since it uses as much as digits as its factorization.

13021321232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18926411 (or 18926389 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13021321232000 its reverse (23212312031), we get a palindrome (13044533544031).

The spelling of 13021321232000 in words is "thirteen trillion, twenty-one billion, three hundred twenty-one million, two hundred thirty-two thousand".