12202101200021 has 4 divisors (see below), whose sum is σ = 12314047082700. Its totient is φ = 12090155317344.

The previous prime is 12202101199979. The next prime is 12202101200071. The reversal of 12202101200021 is 12000210120221.

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 5830843701796 + 6371257498225 = 2414714^2 + 2524135^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202101200021 - 2¹⁰ = 12202101198997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202101199969 and 12202101200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202101200071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55972941176 + ... + 55972941393.

It is an arithmetic number, because the mean of its divisors is an integer number (3078511770675).

Almost surely, 2^{12202101200021} is an apocalyptic number.

It is an amenable number.

12202101200021 is a deficient number, since it is larger than the sum of its proper divisors (111945882679).

12202101200021 is a wasteful number, since it uses less digits than its factorization.

12202101200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111945882678.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12202101200021 its reverse (12000210120221), we get a palindrome (24202311320242).

The spelling of 12202101200021 in words is "twelve trillion, two hundred two billion, one hundred one million, two hundred thousand, twenty-one".