12001300100020 has 96 divisors (see below), whose sum is σ = 31439640750336. Its totient is φ = 3738515558400.

The previous prime is 12001300099991. The next prime is 12001300100059. The reversal of 12001300100020 is 2000100310021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 443044 + ... + 4919236.

It is an arithmetic number, because the mean of its divisors is an integer number (327496257816).

Almost surely, 2^{12001300100020} is an apocalyptic number.

12001300100020 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 12001300100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15719820375168).

12001300100020 is an abundant number, since it is smaller than the sum of its proper divisors (19438340650316).

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

12001300100020 is a wasteful number, since it uses less digits than its factorization.

12001300100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477961 (or 4477959 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 12001300100020 its reverse (2000100310021), we get a palindrome (14001400410041).

The spelling of 12001300100020 in words is "twelve trillion, one billion, three hundred million, one hundred thousand, twenty".