12001020202101 has 16 divisors (see below), whose sum is σ = 18328925542400. Its totient is φ = 6842104581168.

The previous prime is 12001020202069. The next prime is 12001020202141. The reversal of 12001020202101 is 10120202010021.

It is not a de Polignac number, because 12001020202101 - 2⁵ = 12001020202069 is a prime.

It is a super-3 number, since 3×12001020202101³ (a number of 40 digits) contains 333 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 (12001020202141) 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 15 ways as a sum of consecutive naturals, for example, 650875921 + ... + 650894358.

It is an arithmetic number, because the mean of its divisors is an integer number (1145557846400).

Almost surely, 2^{12001020202101} is an apocalyptic number.

It is an amenable number.

12001020202101 is a deficient number, since it is larger than the sum of its proper divisors (6327905340299).

12001020202101 is a wasteful number, since it uses less digits than its factorization.

12001020202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301770728.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001020202101 its reverse (10120202010021), we get a palindrome (22121222212122).

The spelling of 12001020202101 in words is "twelve trillion, one billion, twenty million, two hundred two thousand, one hundred one".