12001020300021 has 4 divisors (see below), whose sum is σ = 16001360400032. Its totient is φ = 8000680200012.

The previous prime is 12001020300001. The next prime is 12001020300023. The reversal of 12001020300021 is 12000302010021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12001020300021 - 2²⁵ = 12000986745589 is a prime.

It is a super-2 number, since 2×12001020300021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001020300023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2000170050001 + ... + 2000170050006.

It is an arithmetic number, because the mean of its divisors is an integer number (4000340100008).

Almost surely, 2^{12001020300021} is an apocalyptic number.

It is an amenable number.

12001020300021 is a deficient number, since it is larger than the sum of its proper divisors (4000340100011).

12001020300021 is an equidigital number, since it uses as much as digits as its factorization.

12001020300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000340100010.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12001020300021 its reverse (12000302010021), we get a palindrome (24001322310042).

The spelling of 12001020300021 in words is "twelve trillion, one billion, twenty million, three hundred thousand, twenty-one".