12122020202121 has 24 divisors (see below), whose sum is σ = 17580659416320. Its totient is φ = 8048558834496.

The previous prime is 12122020202081. The next prime is 12122020202143. The reversal of 12122020202121 is 12120202022121.

It is a happy number.

12122020202121 is a `hidden beast` number, since 121 + 220 + 2 + 0 + 202 + 121 = 666.

It is not a de Polignac number, because 12122020202121 - 2¹³ = 12122020193929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122020202094 and 12122020202103.

It is not an unprimeable number, because it can be changed into a prime (12122020202921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8622885 + ... + 9929661.

It is an arithmetic number, because the mean of its divisors is an integer number (732527475680).

Almost surely, 2^{12122020202121} is an apocalyptic number.

It is an amenable number.

12122020202121 is a deficient number, since it is larger than the sum of its proper divisors (5458639214199).

12122020202121 is a wasteful number, since it uses less digits than its factorization.

12122020202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310965 (or 1310962 counting only the distinct ones).

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

Adding to 12122020202121 its reverse (12120202022121), we get a palindrome (24242222224242).

The spelling of 12122020202121 in words is "twelve trillion, one hundred twenty-two billion, twenty million, two hundred two thousand, one hundred twenty-one".