12020321311000 has 64 divisors (see below), whose sum is σ = 28130037979680. Its totient is φ = 4807703548800.

The previous prime is 12020321310989. The next prime is 12020321311003. The reversal of 12020321311000 is 11312302021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020321311003) 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, 10911499 + ... + 11962501.

Almost surely, 2^{12020321311000} is an apocalyptic number.

12020321311000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020321311000 is an abundant number, since it is smaller than the sum of its proper divisors (16109716668680).

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

12020321311000 is a wasteful number, since it uses less digits than its factorization.

12020321311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062461 (or 1062447 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12020321311000 its reverse (11312302021), we get a palindrome (12031633613021).

The spelling of 12020321311000 in words is "twelve trillion, twenty billion, three hundred twenty-one million, three hundred eleven thousand".