12001200021101 has 4 divisors (see below), whose sum is σ = 12050997531804. Its totient is φ = 11951402510400.

The previous prime is 12001200021071. The next prime is 12001200021119. The reversal of 12001200021101 is 10112000210021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9872886673225 + 2128313347876 = 3142115^2 + 1458874^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001200021101 - 2¹⁰ = 12001200020077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001200021121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24898754990 + ... + 24898755471.

It is an arithmetic number, because the mean of its divisors is an integer number (3012749382951).

Almost surely, 2^{12001200021101} is an apocalyptic number.

It is an amenable number.

12001200021101 is a deficient number, since it is larger than the sum of its proper divisors (49797510703).

12001200021101 is an equidigital number, since it uses as much as digits as its factorization.

12001200021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49797510702.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12001200021101 its reverse (10112000210021), we get a palindrome (22113200231122).

The spelling of 12001200021101 in words is "twelve trillion, one billion, two hundred million, twenty-one thousand, one hundred one".