12022122120021 has 20 divisors (see below), whose sum is σ = 19340431978252. Its totient is φ = 7398228996288.

The previous prime is 12022122120011. The next prime is 12022122120037. The reversal of 12022122120021 is 12002122122021.

It is a happy number.

12022122120021 is a `hidden beast` number, since 1 + 2 + 0 + 221 + 221 + 200 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1761061702500 + 10261060417521 = 1327050^2 + 3203289^2 .

It is not a de Polignac number, because 12022122120021 - 2¹⁰ = 12022122118997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022122119976 and 12022122120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022122120011) 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 19 ways as a sum of consecutive naturals, for example, 5708508976 + ... + 5708511081.

Almost surely, 2^{12022122120021} is an apocalyptic number.

It is an amenable number.

12022122120021 is a deficient number, since it is larger than the sum of its proper divisors (7318309858231).

12022122120021 is a wasteful number, since it uses less digits than its factorization.

12022122120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11417020082 (or 11417020073 counting only the distinct ones).

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

Adding to 12022122120021 its reverse (12002122122021), we get a palindrome (24024244242042).

It can be divided in two parts, 1202212 and 2120021, that added together give a palindrome (3322233).

The spelling of 12022122120021 in words is "twelve trillion, twenty-two billion, one hundred twenty-two million, one hundred twenty thousand, twenty-one".