12201020222121 has 12 divisors (see below), whose sum is σ = 18551258817520. Its totient is φ = 7705907508600.

The previous prime is 12201020222099. The next prime is 12201020222143. The reversal of 12201020222121 is 12122202010221.

It is a happy number.

12201020222121 is a `hidden beast` number, since 1 + 220 + 1 + 0 + 202 + 221 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (12201020222099) and next prime (12201020222143).

It is not a de Polignac number, because 12201020222121 - 2¹³ = 12201020213929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201020222094 and 12201020222103.

It is not an unprimeable number, because it can be changed into a prime (12201020222161) 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 11 ways as a sum of consecutive naturals, for example, 35675497555 + ... + 35675497896.

Almost surely, 2^{12201020222121} is an apocalyptic number.

It is an amenable number.

12201020222121 is a deficient number, since it is larger than the sum of its proper divisors (6350238595399).

12201020222121 is a wasteful number, since it uses less digits than its factorization.

12201020222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71350995476 (or 71350995473 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12201020222121 its reverse (12122202010221), we get a palindrome (24323222232342).

The spelling of 12201020222121 in words is "twelve trillion, two hundred one billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".